code: def generate_128bit_trace_id(self):
          
          if 'generate_128bit_trace_id' in self.config:
              return get_boolean(self.config['generate_128bit_trace_id'], False)
          return os.getenv('JAEGER_TRACEID_128BIT') == 'true'
docs: :return: Returns boolean value to indicate if 128bit trace_id
          generation is enabled