[
    {
        "type": "interface",
        "name": "StringMap2",
        "partial": false,
        "members": [
            {
                "type": "attribute",
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                "stringifier": false,
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                },
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                "extAttrs": []
            },
            {
                "type": "operation",
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                "setter": false,
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                "legacycaller": false,
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                ],
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                "name": "OverrideBuiltins",
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    }
]