{
        "name": "discard",
        "type": "function",
        "description": "discards one or more tabs.",
        "async": true,
        "parameters": [
          {
            "name": "tabIds",
            "description": "The tab or list of tabs to discard.",
            "choices": [
              {"type": "integer", "minimum": 0},
              {"type": "array", "items": {"type": "integer", "minimum": 0}}
            ]
          },
          {
            "choices": [
              {"type": "object",
               "name": "discardProperties",
               "optional": true,
               "properties": {
                 "forceDiscard": {
                   "type": "boolean",
                   "optional": true,
                   "description": "Forces discard regardless of whether an onbeforeunload handler wants to prompt.  Will suppress display of prompt, but will run all onbeforeunload handlers.  Default is `false`."
                 }
               }
              }
            ]
          }
        ]
      },