code: def _bytes_generator(descriptor, max_length=0, limit=0):
      'Helper to create bytes values. (Derived from string generator)'
      strs = values.get_strings(max_length, limit)
      vals = [bytes(_, 'utf-8') for _ in strs]
      return gen.IterValueGenerator(descriptor.name, valsf _bytes_generator(descriptor, max_length=0, limit=0):
      'Helper to create bytes values. (Derived from string generator)'
      strs = values.get_strings(max_length, limit)
      vals = [bytes(_, 'utf-8') for _ in strs]
      return gen.IterValueGenerator(descriptor.name, vals)
docs: Helper to create bytes values. (Derived from string generator)