code: def _read_schema(path):
      """Reads a schema from the provided location.
  
      Args:
        path: The location of the file holding a serialized Schema proto.
  
      Returns:
        An instance of Schema or None if the input argument is None
      """
      result = schema_pb2.Schema()
      contents = file_io.read_file_to_string(path)
      text_format.Parse(contents, result)
      return result
  
imports: import argparse
  import base64
  import csv
  import json
  import os
  import subprocess
  import tempfile
  from typing import List
  from absl import app
  from absl.flags import argparse_flags
  import requests
  import tensorflow_data_validation
  from tensorflow_transform import coders
  from tensorflow_transform.tf_metadata import schema_utils
  from google.protobuf import text_format
  from tensorflow.python.lib.io import file_io
  from tensorflow_metadata.proto.v0 import schema_pb2
label_desc: Use image node_id 3 for calling a global function with example usage: _read_schema(path) and returns: result