private static PyClassType getClassType(@NotNull final PsiElement problemElement) {
    if ((problemElement instanceof PyQualifiedExpression)) {
      final PyExpression qualifier = ((PyQualifiedExpression)problemElement).getQualifier();
      if (qualifier == null) return null;
      final PyType type = TypeEvalContext.userInitiated(problemElement.getProject(), problemElement.getContainingFile()).getType(qualifier);
      return type instanceof PyClassType ? (PyClassType)type : null;
    }
    final PyClass pyClass = PsiTreeUtil.getParentOfType(problemElement, PyClass.class);
    return pyClass != null ? new PyClassTypeImpl(pyClass, false) : null;
  }
private static PyClassType getClassType(@NotNull final PsiElement problemElement)