docstr: Return a map from field to list of AccessedFeatures, the map should
  contain all features accessed in the model layer
docstr_tok: ["Return","a","map","from","field","to","list","of","AccessedFeatures",",","the","map","should","contain","all","features","accessed","in","the","model","layer"]
code: def get_accessed_features(self):
      """
      Return a map from field to list of AccessedFeatures, the map should
      contain all features accessed in the model layer
      """
      return {}
  
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 13 for calling the ModelLayer obj's underlying member method code with example usage: obj.get_accessed_features() and returns: dict