Adds character style setting to the command buffer.
Promise<void>
| Error status | Description |
|---|---|
| ERR_PARAM | An invalid parameter was passed. |
| ERR_TIMEOUT | Failed to communicate with the devices within the specified time. |
| ERR_MEMORY | Necessary memory could not be allocated. |
- If all the parameters are set to "PARAM_UNSPECIFIED," EPOS2_ERR_PARAM will be returned.