code: def mutate(self):
          '''
          Mutate to next state
  
          :return: True if mutated, False if not
          '''
          self._get_ready()
          if self._is_last_index():
              return False
          self._current_index += 1
          self._mutate()
          return Truf mutate(self):
          '''
          Mutate to next state
  
          :return: True if mutated, False if not
          '''
          self._get_ready()
          if self._is_last_index():
              return False
          self._current_index += 1
          self._mutate()
          return True
docs: Mutate to next state
  
          :return: True if mutated, False if not