{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"p.projections.push(ProjectionElem::Field(Either::Right(TupleFieldId"}]}
                        p.projections.push(ProjectionElem::Field(Either::Right(TupleFieldId {
                        self.current_capture_span_stack.push(MirSpan::PatId(arg));
                            tuple: TupleId(!0), // dummy this, as its unused anyways