virtual void Initialize ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< class [ISkeletonTree](API\Editor\SkeletonEditor\ISkeletonTree) > & InSkeletonTree, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< class [IPersonaPreviewScene](API\Editor\Persona\IPersonaPreviewScene) > & InPreviewScene, FOnFilterSkeletonTreeItem InOnFilterSkeletonTreeItem )