[
    {
        "type": "interface",
        "name": "A",
        "partial": false,
        "members": [],
        "inheritance": null,
        "extAttrs": []
    },
    {
        "type": "interface",
        "name": "B",
        "partial": false,
        "members": [],
        "inheritance": null,
        "extAttrs": []
    },
    {
        "type": "interface",
        "name": "C",
        "partial": false,
        "members": [
            {
                "type": "operation",
                "getter": false,
                "setter": false,
                "creator": false,
                "deleter": false,
                "legacycaller": false,
                "static": false,
                "stringifier": false,
                "idlType": {
                    "sequence": false,
                    "generic": null,
                    "nullable": false,
                    "array": false,
                    "union": false,
                    "idlType": "void"
                },
                "name": "f",
                "arguments": [
                    {
                        "optional": false,
                        "variadic": false,
                        "extAttrs": [],
                        "idlType": {
                            "sequence": false,
                            "generic": null,
                            "nullable": true,
                            "array": false,
                            "union": false,
                            "idlType": "A"
                        },
                        "name": "x"
                    }
                ],
                "extAttrs": []
            },
            {
                "type": "operation",
                "getter": false,
                "setter": false,
                "creator": false,
                "deleter": false,
                "legacycaller": false,
                "static": false,
                "stringifier": false,
                "idlType": {
                    "sequence": false,
                    "generic": null,
                    "nullable": false,
                    "array": false,
                    "union": false,
                    "idlType": "void"
                },
                "name": "f",
                "arguments": [
                    {
                        "optional": false,
                        "variadic": false,
                        "extAttrs": [],
                        "idlType": {
                            "sequence": false,
                            "generic": null,
                            "nullable": true,
                            "array": false,
                            "union": false,
                            "idlType": "B"
                        },
                        "name": "x"
                    }
                ],
                "extAttrs": []
            }
        ],
        "inheritance": null,
        "extAttrs": []
    }
]