add a word of docs

src/Umbraco.Web.UI.Client/src/packages/core/tree/file-system-tree-item/file-system-tree-item.context.ts

@@ -1,7 +1,13 @@
 import { UmbTreeItemContextBase } from '../tree-item-base/tree-item-base.context.js';
 import { UmbControllerHostElement } from '@umbraco-cms/backoffice/controller-api';
 import { FileSystemTreeItemPresentationModel } from '@umbraco-cms/backoffice/backend-api';
-
+/**
+ * Tree item context for file system tree items. Uses the path as the unique identifier.
+ *
+ * @export
+ * @class UmbFileSystemTreeItemContext
+ * @extends {UmbTreeItemContextBase<FileSystemTreeItemPresentationModel>}
+ */
 export class UmbFileSystemTreeItemContext extends UmbTreeItemContextBase<FileSystemTreeItemPresentationModel> {
 	constructor(host: UmbControllerHostElement) {
 		super(host, (x: FileSystemTreeItemPresentationModel) => x.path);

src/Umbraco.Web.UI.Client/src/packages/core/tree/file-system-tree-item/file-system-tree-item.element.ts

@@ -21,7 +21,14 @@ const manifest: UmbBackofficeManifestKind = {
 	},
 };
 umbExtensionsRegistry.register(manifest);
-
+/**
+ * Tree item element for file system tree items. Uses the path as the unique identifier.
+ *
+ * @export
+ * @class UmbFileSystemTreeItemElement
+ * @extends {UmbLitElement}
+ * @implements {UmbTreeItemExtensionElement}
+ */
 @customElement('umb-file-system-tree-item')
 export class UmbFileSystemTreeItemElement extends UmbLitElement implements UmbTreeItemExtensionElement {
 	private _item?: FileSystemTreeItemPresentationModel;