@Override public void visitClassObjectAccessExpression(@NotNull PsiClassObjectAccessExpression expression) {
    startElement(expression);
    PsiTypeElement operand = expression.getOperand();
    DfType classConstant = DfTypes.referenceConstant(operand.getType(), expression.getType());
    push(classConstant, expression);
    finishElement(expression);
  }
@Override public void visitClassObjectAccessExpression(@NotNull PsiClassObjectAccessExpression expression)