{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"self.tcx.parent_hir_node(ex.hir_id)"}]}
                                        self.tcx.parent_hir_node(ex.hir_id)
                                    let span = if let hir::Node::Expr(parent) =
                                        && let hir::ExprKind::Cast(..) = parent.kind