code: def update_input_mapping(
      self, update_input_mapping, identifier="default"
  ):
      self._input_mapping_dict[identifier].update(update_input_mapping)
  
imports: import tensorflow
  import numpy
  import os
label_desc: Use image node_id 4 for calling the _RecommenderGraph obj's underlying member method code with example usage: obj.update_input_mapping(update_input_mapping, identifier) without return types