abstract public appendMessage (

abstract public getFilters ([mixed $field]) ...

abstract public bind (mixed $entity, mixed $data) ...

abstract public add (mixed $field,

abstract public getMessages () ...

abstract public getValidators () ...

abstract public setLabels (array $labels) ...

abstract public getLabel (mixed $field) ...

abstract public rules (mixed $field, array $validators) ...

abstract public getEntity () ...