{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"$self_map!(self).$method_name($($marg),*)"}]}
                    $self_map!(self).$method_name($($marg),*)
                fn $method_name(self $(: $self_selftype)* $(,$marg: $marg_ty)*) -> $mret {
                }