NuGet.Dialog.Providers.EmptyTreeNode.EmptyTreeNode C# (CSharp) Method

        public EmptyTreeNode(PackagesProviderBase provider, string category, IVsExtensionsTreeNode parent) :
            base(parent, provider)
        {

            if (category == null)
            {
                throw new ArgumentNullException("category");
            }

            _category = category;
        }