{"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"if"}]}
                    if let hir::ExprKind::Call(path_expr, _) = receiver.kind
                    // See if the `self` parameter is one of the dangerous constructors.
                        && let hir::ExprKind::Path(ref qpath) = path_expr.kind