code: def create_string(self, value: str) -> String:
          
          self.append((
              8,
              self.create_utf8(value).index
          ))
          return self.get(self.raw_count - 1)
docs: Creates a new :class:`ConstantString`, adding it to the pool and
          returning it.
  
          :param value: The value of the new string as a UTF8 string.