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                            "userFacingName",
                            "userFacingDescription",
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                                "description": "User-facing name of the experiment",
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                                "description": "Marks the preference experiment as a high population experiment, that should be excluded from certain types of telemetry",
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                                "default": "false"
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                                "description": "If true, new users will not be enrolled in the study.",
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                                "default": false
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                            "branches": {
                                "description": "List of experimental branches",
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                                                            "description": "Controls whether the default or user value of the preference is modified",
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                                                            "default": "default"
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                                    "preferenceValue": 1000
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                                    "preferenceBranchType": "default",
                                    "preferenceType": "string",
                                    "preferenceValue": "example.com"
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                    ],
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                                    "preferenceType": "string",
                                    "preferenceValue": "example.com"
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