code: def get_conversion_metadata(model_buffer):
      """Read conversion metadata from a tflite model.
  
      Args:
        model_buffer: A tflite model.
  
      Returns:
        The conversion metadata or None if it is not populated.
      """
      model_object = flatbuffer_utils.convert_bytearray_to_object(
          model_buffer
      )
      if not model_object or not model_object.metadata:
          return None
  
      for meta in model_object.metadata:
          if (
              meta.name.decode("utf-8")
              == CONVERSION_METADATA_FIELD_NAME
          ):
              metadata_buf = model_object.buffers[
                  meta.buffer
              ].data.tobytes()
              return conversion_metadata_fb.ConversionMetadataT.InitFromObj(
                  conversion_metadata_fb.ConversionMetadata.GetRootAsConversionMetadata(
                      metadata_buf, 0
                  )
              )
  
      return None
  
imports: import copy
  import datetime
  import sys
  from absl import logging
  import flatbuffers
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.core.protobuf import meta_graph_pb2
  from tensorflow.lite.python import conversion_metadata_schema_py_generated
  from tensorflow.lite.python import schema_py_generated
  from tensorflow.lite.python import schema_util
  from tensorflow.lite.python import tflite_keras_util
  from tensorflow.lite.python.op_hint import convert_op_hints_to_stubs
  from tensorflow.lite.python.op_hint import find_all_hinted_output_nodes
  from tensorflow.lite.tools import flatbuffer_utils
  from tensorflow.python.eager import function
  from tensorflow.python.framework import convert_to_constants
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import error_interpolation
  from tensorflow.python.grappler import tf_optimizer
  from tensorflow.python.training.saver import export_meta_graph
label_desc: Use image node_id 30 for calling a global function with example usage: get_conversion_metadata(model_buffer) and returns: None, None, conversion_metadata_fb