[
  {
    "namespace": "forcedPrefs",
    "description": "Read/write about:config preferences from a privileged parent context.",
    "functions": [
      {
        "name": "setPref",
        "type": "function",
        "async": true,
        "description": "Force an about:config pref to a fixed value. type is one of 'bool','int','string'.",
        "parameters": [
          { "name": "name", "type": "string" },
          { "name": "type", "type": "string", "enum": ["bool", "int", "string"] },
          { "name": "value", "type": "any" }
        ]
      },
      {
        "name": "getPref",
        "type": "function",
        "async": true,
        "description": "Read an about:config pref; returns null if unset.",
        "parameters": [
          { "name": "name", "type": "string" },
          { "name": "type", "type": "string", "enum": ["bool", "int", "string"] }
        ]
      }
    ]
  }
]