def formatLabels(self, labels):
return '<STR_LIT>' % '<STR_LIT:U+002C>'.join([<EOL>'<STR_LIT>' % (k, v) for k, v in labels.items()])<EOL>
Format a set of labels to Prometheus representation.

        In:
          {'method': 'GET', 'port': '80'}

        Out:
          '{method="GET",port="80"}'