{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"me"}]}
                me fn_no_ret(…) fn(&self) [type_could_unify]
                fn fn_ctr() fn() -> Result<Foo> [type_could_unify]
                fn fn_other() fn() -> Result<u32> [type_could_unify]