code: def export_output_for_metrics(self):
      self._export_output_for_metrics = True
  
      # Export output of the layer directly
      export_name = self.name + "/output"
      self.model.add_metric_field(export_name, self.output_schema)
  
imports: import logging
  from collections import namedtuple
  import numpy
  from caffe2.proto import caffe2_pb2
  from caffe2.python import core, schema, scope, utils, workspace
  from caffe2.python.layers.tags import TagContext
label_desc: Use image node_id 23 for calling the ModelLayer obj's underlying member method code with example usage: obj.export_output_for_metrics() without return types