{"ast_node_type":"variable","tokens":[{"end":121,"kind":"keyword","start":0,"text":"}"}]}
                } else if let Value::Projection(outer_value, ProjectionElem::Downcast(_, read_variant)) = self.get(value)
                    return Some((projection_ty, fields[f.as_usize()]));
                    && let Value::Aggregate(written_variant, fields) = self.get(*outer_value)