code: def __init__(self, label_names, channels):
      super().__init__(channels)
      self.label_names = label_names
  
file_path: pytext/demo/my_tagging/metric.py
imports: import itertools
  from pytext.metric_reporters.channel import ConsoleChannel, TensorBoardChannel
  from pytext.metric_reporters.metric_reporter import MetricReporter
  from pytext.metrics import compute_classification_metrics, LabelPrediction
label_desc: Use image node_id 3 to create a new MyTaggingMetricReporter object from inherited base classes: MetricReporter with example: obj = MyTaggingMetricReporter(label_names, channels)