@Override
    protected @NotNull ModCommand perform(@NotNull ActionContext context, @NotNull PsiMethod myMethod) {
      PsiJavaCodeReferenceElement[] referenceElements = myMethod.getThrowsList().getReferenceElements();
      boolean alreadyThrows =
        ContainerUtil.exists(referenceElements, referenceElement -> referenceElement.getCanonicalText().equals(myThrowsCanonicalText));
      if (alreadyThrows) return ModCommand.nop();
      final PsiElementFactory factory = JavaPsiFacade.getElementFactory(myMethod.getProject());
      final PsiClassType type = (PsiClassType)factory.createTypeFromText(myThrowsCanonicalText, myMethod);
      JavaCodeStyleManager manager = JavaCodeStyleManager.getInstance(context.project());
      PsiElement ref = manager.shortenClassReferences(factory.createReferenceElementByType(type));
      return ModCommand.psiUpdate(myMethod, method -> method.getThrowsList().add(ref));
    }
@Override
    protected @NotNull ModCommand perform(@NotNull ActionContext context, @NotNull PsiMethod myMethod)