interface WorkspaceRepositoryInterface

interface WorkspaceRepositoryInterface {
    
    /**
     * Returns an array of workspaces tree item properties, sorted in tree order.
     *
     * @return array
     *   An array of workspace tree item properties, keyed by the workspace IDs.
     *   The tree item properties are:
     *   - depth: The depth of the workspace in the tree;
     *   - ancestors: The ancestor IDs of the workspace;
     *   - descendants: The descendant IDs of the workspace.
     */
    public function loadTree();
    
    /**
     * Returns the descendant IDs of the passed-in workspace, including itself.
     *
     * @param string $workspace_id
     *   A workspace ID.
     *
     * @return string[]
     *   An array of descendant workspace IDs, including the passed-in one.
     */
    public function getDescendantsAndSelf($workspace_id);
    
    /**
     * Resets the cached workspace tree.
     *
     * @return $this
     */
    public function resetCache();

}