code: def telephone(self, mask: str = '', placeholder: str = '#') -> str:
          
          if not mask:
              code = self.random.choice(CALLING_CODES)
              default = '{}-(###)-###-####'.format(code)
              masks = self._data.get('telephone_fmt', [default])
              mask = self.random.choice(masks)
  
          return self.random.custom_code(mask=mask, digit=placeholder)
docs: Generate a random phone number.
  
          :param mask: Mask for formatting number.
          :param placeholder: A placeholder for a mask (default is #).
          :return: Phone number.
  
          :Example:
              +7-(963)-409-11-22.