Catel.ReSharper.Types.InheritFromActionBase.IsAvailable C# (CSharp) Метод

        public override bool IsAvailable(IUserDataHolder cache)
        {
            using (ReadLockCookie.Create())
            {
                if (Provider.SelectedElement != null)
                {
                    _superType = TypeHelper.CreateTypeByCLRName(SuperTypeName, Provider.PsiModule, Provider.SelectedElement.GetResolveContext());
                    if (_superType.GetTypeElement() != null)
                    {
                        _classDeclaration = Provider.SelectedElement.Parent as IClassDeclaration;
                    }
                }
            }

            // !_classDeclaration.IsStatic doesn't work, IsStatic is returns true
            return _classDeclaration != null && !_classDeclaration.IsStaticEx() && _classDeclaration.SuperTypes.IsEmpty();
        }