* added optional argument to command service
* Fixed crash when optional argument is not provided
* Updated argument description
* fixed lint error
* Fix isort error
* switched to use dict for optional field instead of json string
* switched to use ATTR_PAYLOAD
* fixed test
* actually fixed test
* Move consts to const, general cleanup
* Add unique id
* Add default icon
* Set supported features based on sound output
* Update homeassistant/components/webostv/media_player.py
Co-Authored-By: Martin Hjelmare <marhje52@gmail.com>
* Set device class
* Add software_info to client mock
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
* Webostv: add sound_output capability
Add the ability to read and set the sound_output
* Webostv: add sound_output capability
* Webostv: add sound_output capability
* fix blank spaces
* fix to long line
* add ,
* Import ATTR_SOUND_OUTPUT
Do not have the ability to test this change right now
* Add white space
* Create const.py
* Use const import
* Use import from const.py
* Add docstring
* Change order
* Change order
* Fix import
* Fix import
* Fix typo
* Change order again
* Change order again
* Change order of attributes