ccls/tests/function_declaration.cc

void foo(int a, int b);

/*
OUTPUT:
{
  "funcs": [{
      "id": 0,
      "usr": "c:@F@foo#I#I#",
      "short_name": "foo",
      "detailed_name": "void foo(int, int)",
      "declarations": [{
          "spelling": "1:6-1:9",
          "extent": "1:1-1:23",
          "content": "void foo(int a, int b)",
          "param_spellings": ["1:14-1:15", "1:21-1:22"]
        }]
    }]
}
*/