{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"&ProjectionElem::ClosureField(field)"}]}
                &ProjectionElem::ClosureField(field) => format_to!(result, "_{field}"),
                ProjectionElem::Field(Either::Right(f)) => format_to!(result, "_{}", f.index),
                ProjectionElem::Index(_)