{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"FnTrait::FnMut"}]}
            FnTrait::FnMut => Name::new_symbol_root(sym::call_mut),
            FnTrait::FnOnce => Name::new_symbol_root(sym::call_once),
            FnTrait::Fn => Name::new_symbol_root(sym::call),