namespace foo {
    namespace bar {
         namespace baz {
             int qux = 42;
         }
    }
}

namespace fbz = foo::bar::baz;

void func() {
  int a = foo::bar::baz::qux;
  int b = fbz::qux;
}

/*
OUTPUT:
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  "skipped_by_preprocessor": [],
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      "derived": [2],
      "types": [],
      "funcs": [],
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      "uses": ["1:11-1:14|-1|1|4", "9:17-9:20|-1|1|4", "12:11-12:14|0|3|4"]
    }, {
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      "usr": 13838176792705659279,
      "detailed_name": "<fundamental>",
      "qual_name_offset": 0,
      "short_name": "",
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    }, {
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      "detailed_name": "foo::bar",
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      "spell": "2:15-2:18|0|2|2",
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      "uses": ["2:15-2:18|0|2|4", "9:22-9:25|-1|1|4", "12:16-12:19|0|3|4"]
    }, {
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      "spell": "3:20-3:23|2|2|2",
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    }, {
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      "usr": 17,
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    }, {
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      "callees": []
    }],
  "vars": [{
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      "short_name": "qux",
      "hover": "int foo::bar::baz::qux = 42",
      "declarations": [],
      "spell": "4:18-4:21|3|2|2",
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    }, {
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      "short_name": "a",
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    }, {
      "id": 2,
      "usr": 1200087780658383286,
      "detailed_name": "int b",
      "qual_name_offset": 4,
      "short_name": "b",
      "hover": "int b = fbz::qux",
      "declarations": [],
      "spell": "13:7-13:8|0|3|2",
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      "type": 4,
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    }]
}
*/