code: def create_metric(metric_type, metric_id, data):
      
      if not isinstance(data, list):
          data = [data]
  
      return { 'type': metric_type,'id': metric_id, 'data': data }
docs: Create Hawkular-Metrics' submittable structure.
  
      :param metric_type: MetricType to be matched (required)
      :param metric_id: Exact string matching metric id
      :param data: A datapoint or a list of datapoints created with create_datapoint(value, timestamp, tags)