> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes. # setStorageManager > Injects a storage manager into the device controller for persistence. ```ts setStorageManager(storageManager): void ``` Injects a storage manager into the device controller for persistence. ## **Parameters** **`storageManager`** `StorageManager` — required Storage manager implementation used to persist device and session state. --- ## **Returns** `void` ## **Examples** ```ts client.setStorageManager(storageManager); ``` > Injects a storage manager into the device controller for persistence.