@Override
  public void doInvoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException {
    final PsiElement element = PyUtil.findNonWhitespaceAtOffset(file, editor.getCaretModel().getOffset());
    PyFunction problemFunction = PsiTreeUtil.getParentOfType(element, PyFunction.class);
    if (problemFunction == null) return;
    final PyClass containingClass = problemFunction.getContainingClass();
    if (containingClass == null) return;
    final List<UsageInfo> usages = PyPsiIndexUtil.findUsages(problemFunction, false);
    final PyDecoratorList decoratorList = problemFunction.getDecoratorList();
    if (decoratorList != null) {
      final PyDecorator decorator = decoratorList.findDecorator(PyNames.STATICMETHOD);
      if (decorator != null) decorator.delete();
    }

    final PsiElement copy = problemFunction.copy();
    problemFunction.delete();
    file.addAfter(copy, containingClass);

    for (UsageInfo usage : usages) {
      final PsiElement usageElement = usage.getElement();
      if (usageElement instanceof PyReferenceExpression) {
        PyUtil.removeQualifier((PyReferenceExpression)usageElement);
      }
    }
  }
@Override
  public void doInvoke(@NotNull Project project, Editor editor, PsiFile file)