code: static boolean hasUnnamedBreakOrContinue(Node n) {
      return NodeUtil.has(n, IS_UNNAMED_BREAK_PREDICATE, CAN_CONTAIN_BREAK_PREDICATE)
          || NodeUtil.has(n, IS_UNNAMED_CONTINUE_PREDICATE, CAN_CONTAIN_CONTINUE_PREDICATE);
    }
docs: Returns whether a node has any unhandled breaks or continue.