Im trying to create a plugin that will show up in the assets pane in Optimizely 12, and its not showing up. I have a component set up below, but its not visible:

 [Component]
    public sealed class MyComponent : ComponentDefinitionBase
    {
        public GlobalSettingsComponent()
            : base("epi-cms/component/MainNavigationComponent")
        {
            this.LanguagePath = "/episerver/cms/components/myComponent";
            this.Title = "My Component";
            this.SortOrder = 1000;
            this.PlugInAreas = new[] { PlugInArea.Assets };
            this.Settings.Add(new Setting("repositoryKey",MyComponentRepositoryDescriptor.RepositoryKey));
        }
    }

[ServiceConfiguration(typeof(IContentRepositoryDescriptor))]
    public class MyComponentRepositoryDescriptor: ContentRepositoryDescriptorBase
    {
        public static string RepositoryKey => "mycomponent";

        public override IEnumerable<Type> ContainedTypes => new[] { typeof(CustomClass), typeof(CustomFolder) };

        public override IEnumerable<Type> CreatableTypes => new[] { typeof(CustomClass), typeof(CustomFolder) };

        public override string CustomNavigationWidget => "epi-cms/component/ContentNavigationTree";

        public override string CustomSelectTitle =>
            LocalizationService.Current.GetString("/contentrepositories/mycomponent/customselecttitle");

        public override string Key => RepositoryKey;

        public override IEnumerable<Type> MainNavigationTypes => new[] { typeof(CustomClass), typeof(CustomFolder) };

        public override IEnumerable<string> MainViews => new string[1] { HomeView.ViewName };

        public override string Name =>
            LocalizationService.Current.GetString("/contentrepositories/mycomponent/name");

        public override IEnumerable<ContentReference> Roots => new[] { this.MyClass.Service.GlobalRoot};

        public override int SortOrder => 1000;

        private Injected<ICustomClass> MyClass{ get; set; }
    }