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                        "last_name": "Cooper",
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                    "comment": "r+ to pause",
                    "created": "2020-07-28T18:50:25.842757Z",
                    "creator": {
                        "id": 60,
                        "first_name": "Tiffany",
                        "last_name": "Tran",
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                                    "preferenceBranchType": "default",
                                    "preferenceType": "string",
                                    "preferenceValue": "{   \"api_key_pref\": \"extensions.pocket.oAuthConsumerKey\",   \"collapsible\": true,   \"enabled\": true,   \"show_spocs\": true,   \"hardcoded_layout\": true,   \"personalized\": true,   \"layout_endpoint\": \"https://getpocket.cdn.mozilla.net/v3/newtab/layout?version=1&consumer_key=$apiKey&layout_variant=basic\",   \"unused_key\": \"unused_4\" }"
                                },
                                "browser.newtabpage.activity-stream.discoverystream.spocs-endpoint": {
                                    "preferenceBranchType": "default",
                                    "preferenceType": "string",
                                    "preferenceValue": "https://spocs.getpocket.com/spocs?site=1124115"
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                            },
                            "ratio": 50,
                            "slug": "control"
                        },
                        {
                            "preferences": {
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                                },
                                "browser.newtabpage.activity-stream.discoverystream.spocs-endpoint": {
                                    "preferenceBranchType": "user",
                                    "preferenceType": "string",
                                    "preferenceValue": "https://spocs.getpocket.com/spocs?site=1124115"
                                }
                            },
                            "ratio": 50,
                            "slug": "variant"
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                    ],
                    "experimentDocumentUrl": "https://experimenter.services.mozilla.com/experiments/activity-stream-pocket-new-tab-dynamic-video-card-release-test/",
                    "isEnrollmentPaused": true,
                    "slug": "bug-1649341-pref-activity-stream-pocket-new-tab-dynamic-video-card-release-78-79",
                    "userFacingDescription": "New Tab Story Card with a dynamic video button",
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                "experimenter_slug": "activity-stream-pocket-new-tab-dynamic-video-card-release-test",
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                "comment": "r+ to setEnrollmentPaused",
                "creator": {
                    "id": 60,
                    "first_name": "Tiffany",
                    "last_name": "Tran",
                    "email": "ttran@mozilla.com"
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                "date_created": "2020-07-28T18:50:22.142890Z",
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                        "id": 1737,
                        "created": "2020-07-28T19:04:26.122223Z",
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                "updated": "2020-08-25T16:04:15.200064Z"
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                "filter_expression": "(normandy.channel in [\"beta\"]) && ((env.version|versionCompare(\"76.!\")>=0)&&(env.version|versionCompare(\"78.*\")<0)) && (normandy.locale in [\"en-US\"]) && (normandy.country in [\"US\"]) && ([normandy.userId,\"global-v2\"]|bucketSample(7801,100,10000)) && ((\n  !(\"browser.newtabpage.enabled\"|preferenceIsUserSet) || \n  !(\"browser.startup.homepage\"|preferenceIsUserSet)\n) &&\n!(\"browser.newtabpage.activity-stream.showSearch\"|preferenceIsUserSet) &&\n!(\"browser.newtabpage.activity-stream.feeds.topsites\"|preferenceIsUserSet) &&\n!(\"browser.newtabpage.activity-stream.feeds.section.topstories\"|preferenceIsUserSet) &&\n!(\"browser.newtabpage.activity-stream.feeds.section.highlights\"|preferenceIsUserSet))",
                "filter_object": [
                    {
                        "channels": [
                            "beta"
                        ],
                        "type": "channel"
                    },
                    {
                        "type": "version",
                        "versions": [
                            76,
                            77,
                            78
                        ]
                    },
                    {
                        "locales": [
                            "en-US"
                        ],
                        "type": "locale"
                    },
                    {
                        "countries": [
                            "US"
                        ],
                        "type": "country"
                    },
                    {
                        "count": 100,
                        "input": [
                            "normandy.userId",
                            "\"global-v2\""
                        ],
                        "start": 7801,
                        "total": 10000,
                        "type": "bucketSample"
                    }
                ],
                "id": 3088,
                "identicon_seed": "v1:sNXOOgpqIHCJ",
                "metadata": {},
                "name": "activity-stream-pocket-new-tab-newsletter-signup-smoke-test-1616997",
                "recipe": {
                    "approved_revision_id": 3088,
                    "id": 962,
                    "latest_revision_id": 3088
                },
                "updated": "2020-05-26T16:41:03.583558Z"
            },
            "signature": null,
            "uses_only_baseline_capabilities": false
        },
        {
            "approved_revision": {
                "action": {
                    "arguments_schema": {
                        "$schema": "http://json-schema.org/draft-04/schema#",
                        "title": "Run a feature experiment activated by a set of preferences.",
                        "type": "object",
                        "required": [
                            "slug",
                            "userFacingName",
                            "userFacingDescription",
                            "branches"
                        ],
                        "properties": {
                            "slug": {
                                "description": "Unique identifier for this experiment",
                                "type": "string",
                                "pattern": "^[A-Za-z0-9\\-_]+$"
                            },
                            "userFacingName": {
                                "description": "User-facing name of the experiment",
                                "type": "string",
                                "minLength": 1
                            },
                            "userFacingDescription": {
                                "description": "User-facing description of the experiment",
                                "type": "string",
                                "minLength": 1
                            },
                            "experimentDocumentUrl": {
                                "description": "URL of a document describing the experiment",
                                "type": "string",
                                "format": "uri",
                                "default": ""
                            },
                            "isHighPopulation": {
                                "description": "Marks the preference experiment as a high population experiment, that should be excluded from certain types of telemetry",
                                "type": "boolean",
                                "default": "false"
                            },
                            "isEnrollmentPaused": {
                                "description": "If true, new users will not be enrolled in the study.",
                                "type": "boolean",
                                "default": false
                            },
                            "branches": {
                                "description": "List of experimental branches",
                                "type": "array",
                                "minItems": 1,
                                "items": {
                                    "type": "object",
                                    "required": [
                                        "slug",
                                        "ratio",
                                        "preferences"
                                    ],
                                    "properties": {
                                        "slug": {
                                            "description": "Unique identifier for this branch of the experiment",
                                            "type": "string",
                                            "pattern": "^[A-Za-z0-9\\-_]+$"
                                        },
                                        "ratio": {
                                            "description": "Ratio of users who should be grouped into this branch",
                                            "type": "integer",
                                            "minimum": 1
                                        },
                                        "preferences": {
                                            "description": "The set of preferences to be set if this branch is chosen",
                                            "type": "object",
                                            "patternProperties": {
                                                ".*": {
                                                    "type": "object",
                                                    "properties": {
                                                        "preferenceType": {
                                                            "description": "Data type of the preference that controls this experiment",
                                                            "type": "string",
                                                            "enum": [
                                                                "string",
                                                                "integer",
                                                                "boolean"
                                                            ]
                                                        },
                                                        "preferenceBranchType": {
                                                            "description": "Controls whether the default or user value of the preference is modified",
                                                            "type": "string",
                                                            "enum": [
                                                                "user",
                                                                "default"
                                                            ],
                                                            "default": "default"
                                                        },
                                                        "preferenceValue": {
                                                            "description": "Value for this preference when this branch is chosen",
                                                            "type": [
                                                                "string",
                                                                "number",
                                                                "boolean"
                                                            ]
                                                        }
                                                    },
                                                    "required": [
                                                        "preferenceType",
                                                        "preferenceBranchType",
                                                        "preferenceValue"
                                                    ]
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    },
                    "name": "multi-preference-experiment",
                    "id": 9,
                    "implementation_url": null
                },
                "approval_request": {
                    "approved": true,
                    "approver": {
                        "id": 1,
                        "first_name": "Michael",
                        "last_name": "Cooper",
                        "email": "mcooper@mozilla.com"
                    },
                    "comment": "r+ to pause",
                    "created": "2020-07-14T16:49:30.559217Z",
                    "creator": {
                        "id": 60,
                        "first_name": "Tiffany",
                        "last_name": "Tran",
                        "email": "ttran@mozilla.com"
                    },
                    "id": 2204,
                    "revision": {
                        "id": 3219,
                        "recipe_id": 1011
                    }
                },
                "arguments": {
                    "branches": [
                        {
                            "preferences": {
                                "browser.newtabpage.activity-stream.discoverystream.config": {
                                    "preferenceBranchType": "default",
                                    "preferenceType": "string",
                                    "preferenceValue": "{\"api_key_pref\":\"extensions.pocket.oAuthConsumerKey\",\"collapsible\":true,\"enabled\":true,\"show_spocs\":true,\"personalized\":true,\"layout_endpoint\":\"https://getpocket.cdn.mozilla.net/v3/newtab/layout?version=1&consumer_key=$apiKey&layout_variant=signup-layout\",\"unused_key\":true}"
                                }
                            },
                            "ratio": 1,
                            "slug": "email-snippet"
                        },
                        {
                            "preferences": {
                                "browser.newtabpage.activity-stream.discoverystream.config": {
                                    "preferenceBranchType": "default",
                                    "preferenceType": "string",
                                    "preferenceValue": "{\"api_key_pref\":\"extensions.pocket.oAuthConsumerKey\",\"collapsible\":true,\"enabled\":true,\"show_spocs\":true,\"hardcoded_layout\":true,\"personalized\":true,\"layout_endpoint\":\"\",\"unused_key\":true}"
                                }
                            },
                            "ratio": 1,
                            "slug": "default-3x7-layout"
                        }
                    ],
                    "experimentDocumentUrl": "https://experimenter.services.mozilla.com/experiments/new-tab-email-newsletter-signup-snippet/",
                    "isEnrollmentPaused": true,
                    "slug": "bug-1634726-pref-activity-stream-pocket-new-tab-newsletter-signup--release-78-79",
                    "userFacingDescription": "Newsletter Signup Snippet",
                    "userFacingName": "activity-stream-pocket-new-tab-newsletter-signup-study-1616997"
                },
                "experimenter_slug": "new-tab-email-newsletter-signup-snippet",
                "capabilities": [
                    "capabilities-v1",
                    "jexl.transform.preferenceIsUserSet",
                    "jexl.transform.bucketSample",
                    "jexl.context.env.version",
                    "jexl.transform.versionCompare",
                    "action.multi-preference-experiment"
                ],
                "comment": "set EnrollmentPaused to true",
                "creator": {
                    "id": 60,
                    "first_name": "Tiffany",
                    "last_name": "Tran",
                    "email": "ttran@mozilla.com"
                },
                "date_created": "2020-07-14T16:49:26.665709Z",
                "enabled_states": [
                    {
                        "id": 1746,
                        "created": "2020-08-05T19:25:35.292060Z",
                        "creator": {
                            "id": 1,
                            "first_name": "Michael",
                            "last_name": "Cooper",
                            "email": "mcooper@mozilla.com"
                        },
                        "enabled": false,
                        "carryover_from": null
                    },
                    {
                        "id": 1704,
                        "created": "2020-07-14T16:57:17.149823Z",
                        "creator": {
                            "id": 1,
                            "first_name": "Michael",
                            "last_name": "Cooper",
                            "email": "mcooper@mozilla.com"
                        },
                        "enabled": true,
                        "carryover_from": 1694
                    }
                ],
                "enabled": false,
                "extra_capabilities": [],
                "extra_filter_expression": "(\n  !(\"browser.newtabpage.enabled\"|preferenceIsUserSet)\n\t|| !(\"browser.startup.homepage\"|preferenceIsUserSet)\n)",
                "filter_expression": "(normandy.channel in [\"release\"]) && ((env.version|versionCompare(\"78.!\")>=0)&&(env.version|versionCompare(\"79.*\")<0)) && (normandy.locale in [\"en-US\"]) && (normandy.country in [\"US\"]) && (!('browser.newtabpage.activity-stream.showSearch'|preferenceIsUserSet)) && (!('browser.newtabpage.activity-stream.feeds.topsites'|preferenceIsUserSet)) && (!('browser.newtabpage.activity-stream.feeds.section.topstories'|preferenceIsUserSet)) && (!('browser.newtabpage.activity-stream.feeds.section.highlights'|preferenceIsUserSet)) && ([normandy.userId,\"global-v2\"]|bucketSample(9878,100,10000)) && ((\n  !(\"browser.newtabpage.enabled\"|preferenceIsUserSet)\n\t|| !(\"browser.startup.homepage\"|preferenceIsUserSet)\n))",
                "filter_object": [
                    {
                        "channels": [
                            "release"
                        ],
                        "type": "channel"
                    },
                    {
                        "type": "version",
                        "versions": [
                            78,
                            79
                        ]
                    },
                    {
                        "locales": [
                            "en-US"
                        ],
                        "type": "locale"
                    },
                    {
                        "countries": [
                            "US"
                        ],
                        "type": "country"
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.showSearch",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.feeds.topsites",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.feeds.section.topstories",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.feeds.section.highlights",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "count": 100,
                        "input": [
                            "normandy.userId",
                            "\"global-v2\""
                        ],
                        "start": 9878,
                        "total": 10000,
                        "type": "bucketSample"
                    }
                ],
                "id": 3219,
                "identicon_seed": "v1:HAWLSSXcHSSz",
                "metadata": {},
                "name": "activity-stream-pocket-new-tab-newsletter-signup-study-1616997",
                "recipe": {
                    "approved_revision_id": 3219,
                    "id": 1011,
                    "latest_revision_id": 3219
                },
                "updated": "2020-08-05T19:25:35.294011Z"
            },
            "id": 1011,
            "latest_revision": {
                "action": {
                    "arguments_schema": {
                        "$schema": "http://json-schema.org/draft-04/schema#",
                        "title": "Run a feature experiment activated by a set of preferences.",
                        "type": "object",
                        "required": [
                            "slug",
                            "userFacingName",
                            "userFacingDescription",
                            "branches"
                        ],
                        "properties": {
                            "slug": {
                                "description": "Unique identifier for this experiment",
                                "type": "string",
                                "pattern": "^[A-Za-z0-9\\-_]+$"
                            },
                            "userFacingName": {
                                "description": "User-facing name of the experiment",
                                "type": "string",
                                "minLength": 1
                            },
                            "userFacingDescription": {
                                "description": "User-facing description of the experiment",
                                "type": "string",
                                "minLength": 1
                            },
                            "experimentDocumentUrl": {
                                "description": "URL of a document describing the experiment",
                                "type": "string",
                                "format": "uri",
                                "default": ""
                            },
                            "isHighPopulation": {
                                "description": "Marks the preference experiment as a high population experiment, that should be excluded from certain types of telemetry",
                                "type": "boolean",
                                "default": "false"
                            },
                            "isEnrollmentPaused": {
                                "description": "If true, new users will not be enrolled in the study.",
                                "type": "boolean",
                                "default": false
                            },
                            "branches": {
                                "description": "List of experimental branches",
                                "type": "array",
                                "minItems": 1,
                                "items": {
                                    "type": "object",
                                    "required": [
                                        "slug",
                                        "ratio",
                                        "preferences"
                                    ],
                                    "properties": {
                                        "slug": {
                                            "description": "Unique identifier for this branch of the experiment",
                                            "type": "string",
                                            "pattern": "^[A-Za-z0-9\\-_]+$"
                                        },
                                        "ratio": {
                                            "description": "Ratio of users who should be grouped into this branch",
                                            "type": "integer",
                                            "minimum": 1
                                        },
                                        "preferences": {
                                            "description": "The set of preferences to be set if this branch is chosen",
                                            "type": "object",
                                            "patternProperties": {
                                                ".*": {
                                                    "type": "object",
                                                    "properties": {
                                                        "preferenceType": {
                                                            "description": "Data type of the preference that controls this experiment",
                                                            "type": "string",
                                                            "enum": [
                                                                "string",
                                                                "integer",
                                                                "boolean"
                                                            ]
                                                        },
                                                        "preferenceBranchType": {
                                                            "description": "Controls whether the default or user value of the preference is modified",
                                                            "type": "string",
                                                            "enum": [
                                                                "user",
                                                                "default"
                                                            ],
                                                            "default": "default"
                                                        },
                                                        "preferenceValue": {
                                                            "description": "Value for this preference when this branch is chosen",
                                                            "type": [
                                                                "string",
                                                                "number",
                                                                "boolean"
                                                            ]
                                                        }
                                                    },
                                                    "required": [
                                                        "preferenceType",
                                                        "preferenceBranchType",
                                                        "preferenceValue"
                                                    ]
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    },
                    "name": "multi-preference-experiment",
                    "id": 9,
                    "implementation_url": null
                },
                "approval_request": {
                    "approved": true,
                    "approver": {
                        "id": 1,
                        "first_name": "Michael",
                        "last_name": "Cooper",
                        "email": "mcooper@mozilla.com"
                    },
                    "comment": "r+ to pause",
                    "created": "2020-07-14T16:49:30.559217Z",
                    "creator": {
                        "id": 60,
                        "first_name": "Tiffany",
                        "last_name": "Tran",
                        "email": "ttran@mozilla.com"
                    },
                    "id": 2204,
                    "revision": {
                        "id": 3219,
                        "recipe_id": 1011
                    }
                },
                "arguments": {
                    "branches": [
                        {
                            "preferences": {
                                "browser.newtabpage.activity-stream.discoverystream.config": {
                                    "preferenceBranchType": "default",
                                    "preferenceType": "string",
                                    "preferenceValue": "{\"api_key_pref\":\"extensions.pocket.oAuthConsumerKey\",\"collapsible\":true,\"enabled\":true,\"show_spocs\":true,\"personalized\":true,\"layout_endpoint\":\"https://getpocket.cdn.mozilla.net/v3/newtab/layout?version=1&consumer_key=$apiKey&layout_variant=signup-layout\",\"unused_key\":true}"
                                }
                            },
                            "ratio": 1,
                            "slug": "email-snippet"
                        },
                        {
                            "preferences": {
                                "browser.newtabpage.activity-stream.discoverystream.config": {
                                    "preferenceBranchType": "default",
                                    "preferenceType": "string",
                                    "preferenceValue": "{\"api_key_pref\":\"extensions.pocket.oAuthConsumerKey\",\"collapsible\":true,\"enabled\":true,\"show_spocs\":true,\"hardcoded_layout\":true,\"personalized\":true,\"layout_endpoint\":\"\",\"unused_key\":true}"
                                }
                            },
                            "ratio": 1,
                            "slug": "default-3x7-layout"
                        }
                    ],
                    "experimentDocumentUrl": "https://experimenter.services.mozilla.com/experiments/new-tab-email-newsletter-signup-snippet/",
                    "isEnrollmentPaused": true,
                    "slug": "bug-1634726-pref-activity-stream-pocket-new-tab-newsletter-signup--release-78-79",
                    "userFacingDescription": "Newsletter Signup Snippet",
                    "userFacingName": "activity-stream-pocket-new-tab-newsletter-signup-study-1616997"
                },
                "experimenter_slug": "new-tab-email-newsletter-signup-snippet",
                "capabilities": [
                    "capabilities-v1",
                    "jexl.transform.preferenceIsUserSet",
                    "jexl.transform.bucketSample",
                    "jexl.context.env.version",
                    "jexl.transform.versionCompare",
                    "action.multi-preference-experiment"
                ],
                "comment": "set EnrollmentPaused to true",
                "creator": {
                    "id": 60,
                    "first_name": "Tiffany",
                    "last_name": "Tran",
                    "email": "ttran@mozilla.com"
                },
                "date_created": "2020-07-14T16:49:26.665709Z",
                "enabled_states": [
                    {
                        "id": 1746,
                        "created": "2020-08-05T19:25:35.292060Z",
                        "creator": {
                            "id": 1,
                            "first_name": "Michael",
                            "last_name": "Cooper",
                            "email": "mcooper@mozilla.com"
                        },
                        "enabled": false,
                        "carryover_from": null
                    },
                    {
                        "id": 1704,
                        "created": "2020-07-14T16:57:17.149823Z",
                        "creator": {
                            "id": 1,
                            "first_name": "Michael",
                            "last_name": "Cooper",
                            "email": "mcooper@mozilla.com"
                        },
                        "enabled": true,
                        "carryover_from": 1694
                    }
                ],
                "enabled": false,
                "extra_capabilities": [],
                "extra_filter_expression": "(\n  !(\"browser.newtabpage.enabled\"|preferenceIsUserSet)\n\t|| !(\"browser.startup.homepage\"|preferenceIsUserSet)\n)",
                "filter_expression": "(normandy.channel in [\"release\"]) && ((env.version|versionCompare(\"78.!\")>=0)&&(env.version|versionCompare(\"79.*\")<0)) && (normandy.locale in [\"en-US\"]) && (normandy.country in [\"US\"]) && (!('browser.newtabpage.activity-stream.showSearch'|preferenceIsUserSet)) && (!('browser.newtabpage.activity-stream.feeds.topsites'|preferenceIsUserSet)) && (!('browser.newtabpage.activity-stream.feeds.section.topstories'|preferenceIsUserSet)) && (!('browser.newtabpage.activity-stream.feeds.section.highlights'|preferenceIsUserSet)) && ([normandy.userId,\"global-v2\"]|bucketSample(9878,100,10000)) && ((\n  !(\"browser.newtabpage.enabled\"|preferenceIsUserSet)\n\t|| !(\"browser.startup.homepage\"|preferenceIsUserSet)\n))",
                "filter_object": [
                    {
                        "channels": [
                            "release"
                        ],
                        "type": "channel"
                    },
                    {
                        "type": "version",
                        "versions": [
                            78,
                            79
                        ]
                    },
                    {
                        "locales": [
                            "en-US"
                        ],
                        "type": "locale"
                    },
                    {
                        "countries": [
                            "US"
                        ],
                        "type": "country"
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.showSearch",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.feeds.topsites",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.feeds.section.topstories",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "pref": "browser.newtabpage.activity-stream.feeds.section.highlights",
                        "type": "preferenceIsUserSet",
                        "value": false
                    },
                    {
                        "count": 100,
                        "input": [
                            "normandy.userId",
                            "\"global-v2\""
                        ],
                        "start": 9878,
                        "total": 10000,
                        "type": "bucketSample"
                    }
                ],
                "id": 3219,
                "identicon_seed": "v1:HAWLSSXcHSSz",
                "metadata": {},
                "name": "activity-stream-pocket-new-tab-newsletter-signup-study-1616997",
                "recipe": {
                    "approved_revision_id": 3219,
                    "id": 1011,
                    "latest_revision_id": 3219
                },
                "updated": "2020-08-05T19:25:35.294011Z"
            },
            "signature": null,
            "uses_only_baseline_capabilities": false
        },
        {
            "approved_revision": {
                "action": {
                    "arguments_schema": {
                        "$schema": "http://json-schema.org/draft-04/schema#",
                        "title": "Run a feature experiment activated by a set of preferences.",
                        "type": "object",
                        "required": [
                            "slug",
                            "userFacingName",
                            "userFacingDescription",
                            "branches"
                        ],
                        "properties": {
                            "slug": {
                                "description": "Unique identifier for this experiment",
                                "type": "string",
                                "pattern": "^[A-Za-z0-9\\-_]+$"
                            },
                            "userFacingName": {
                                "description": "User-facing name of the experiment",
                                "type": "string",
                                "minLength": 1
                            },
                            "userFacingDescription": {
                                "description": "User-facing description of the experiment",
                                "type": "string",
                                "minLength": 1
                            },
                            "experimentDocumentUrl": {
                                "description": "URL of a document describing the experiment",
                                "type": "string",
                                "format": "uri",
                                "default": ""
                            },
                            "isHighPopulation": {
                                "description": "Marks the preference experiment as a high population experiment, that should be excluded from certain types of telemetry",
                                "type": "boolean",
                                "default": "false"
                            },
                            "isEnrollmentPaused": {
                                "description": "If true, new users will not be enrolled in the study.",
                                "type": "boolean",
                                "default": false
                            },
                            "branches": {
                                "description": "List of experimental branches",
                                "type": "array",
                                "minItems": 1,
                                "items": {
                                    "type": "object",
                                    "required": [
                                        "slug",
                                        "ratio",
                                        "preferences"
                                    ],
                                    "properties": {
                                        "slug": {
                                            "description": "Unique identifier for this branch of the experiment",
                                            "type": "string",
                                            "pattern": "^[A-Za-z0-9\\-_]+$"
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