@Override
  public void deleteChildInternal(@NotNull ASTNode child) {
    super.deleteChildInternal(child);
    if (child.getElementType() == JavaTokenType.IDENTIFIER) {
      final ASTNode sign = findChildByRole(ChildRole.OPERATION_SIGN);
      if (sign != null) {
        super.deleteChildInternal(sign);
      }
    }
  }
@Override
  public void deleteChildInternal(@NotNull ASTNode child)