{"ast_node_type":"function","tokens":[{"end":75,"kind":"keyword","start":0,"text":"assert_matches(\"Foo"}]}
    assert_matches("Foo {}", "struct Foo {} fn f() {Foo {}}", &["Foo {}"]);
    assert_matches("Foo {$a: $b, $c: $d}", code, &["Foo {bar: 1, baz: 2}"]);
}