private InstructionImpl startNode(@Nullable GroovyPsiElement element, boolean checkPending) {
    final InstructionImpl instruction = new InstructionImpl(element);
    addNode(instruction);
    if (checkPending) checkPending(instruction);
    myProcessingStack.push(instruction);
    return instruction;
  }
private InstructionImpl startNode(@Nullable GroovyPsiElement element, boolean checkPending)