docs: def to_line_protocol(self):
          """
          Converts the given metrics as a single line of InfluxDB line protocol
          """
          tags = self.get_output_tags()
  
          return u"{0}{1} {2}{3}".format(
              self.get_output_measurement(),
              "," + tags if tags else '',
              self.get_output_values(),
              self.get_output_timestamp()
          )