code: def _get_module_from_symbol(symbol):
      if "." not in symbol:
          return ""
      return ".".join(symbol.split(".")[:-1])
  
file_path: tensorflow-upstream/tensorflow/python/tools/api/generator/output_init_files_test.py
imports: import argparse
  import importlib
  import sys
  from tensorflow.python.platform import resource_loader
  from tensorflow.python.platform import test
  from tensorflow.python.util import tf_decorator
label_desc: Use image node_id 2 for calling a global function with example usage: _get_module_from_symbol(symbol) and returns: str, str