void foo() {} /* OUTPUT: { "types": [], "functions": [{ "id": 0, "short_name": "foo", "qualified_name": "foo", "declaration": null, "definition": "tests/function_definition.cc:1:6", "declaring_type": null, "base": null, "derived": [], "locals": [], "callers": [], "callees": [], "uses": [] }], "variables": [] } */