Laracasts\Validation\ValidatorInterface::fails PHP Method

    public function fails();

 /**
  * Validate the form data
  *
  * @param array $formData
  * @return mixed
  * @throws FormValidationException
  */
 public function validate(array $formData)
 {
     $this->validation = $this->validator->make($formData, $this->getValidationRules(), $this->getValidationMessages());
     if ($this->validation->fails()) {
         throw new FormValidationException('Validation failed', $this->getValidationErrors());
     }
     return true;
 }