{"ast_node_type":"function","tokens":[{"end":66,"kind":"keyword","start":0,"text":"fn"}]}
    fn fn_ctr_with_args(&self, n: u32) -> Foo { unimplemented!() }
    fn fn_ctr(&self) -> Foo { unimplemented!() }
    fn fn_another(&self, n: u32) -> Bar { unimplemented!() }