code: def register_operation(self, operation, identifier="default"):
      self._operation_identifier_set.add(identifier)
      tf.add_to_collection(
          "openrec.tf1.recommender.operations." + identifier, operation
      )
  
imports: import tensorflow
  import numpy
  import os
label_desc: Use image node_id 5 for calling the _RecommenderGraph obj's underlying member method code with example usage: obj.register_operation(operation, identifier) without return types