@Override
      public int getChildRole(@NotNull ASTNode child) {
        IElementType elType = child.getElementType();
        if (elType == JavaTokenType.DOUBLE_COLON) return ChildRole.DOUBLE_COLON;
        if (elType == JavaTokenType.IDENTIFIER) return ChildRole.REFERENCE_NAME;
        if (elType == JavaElementType.REFERENCE_EXPRESSION) return ChildRole.CLASS_REFERENCE;
        return ChildRole.EXPRESSION;
      }
@Override
      public int getChildRole(@NotNull ASTNode child)