no_empty can be used to validate if input is not empty

- do: description
     enabled: false # Cannot be empty when true.
     message: 'Custom message...' # this is optional, a default message is used when not specified.
Supported Params
Param Description Required Default Message
enabled Bool value to enable/disable the option Yes  
message Message to show if the validation fails No The [INPUT NAME] can’t be empty

Supported Validators:

'changeset', 'description', 'label', 'milestone', 'title'