| userId | number | No | User ID.<br>Value:<br>- Set this parameter to the ID of the user to be queried.<br>- If no value is specified, information about the current user is queried. |
| callback | callback:AsyncCallback<[StorageStats](#StorageStats)> | Yes | Callback invoked to return the information obtained.|
| callback | callback: AsyncCallback<[StorageStats](#storagestats)> | Yes | Callback invoked to return the information obtained.|