code: def get_global_func(name, allow_missing=False):
      """Get a global function by name
  
      Parameters
      ----------
      name : str
          The name of the global function
  
      allow_missing : bool
          Whether allow missing function or raise an error.
  
      Returns
      -------
      func : tvm.Function
          The function to be returned, None if function is missing.
      """
      return _get_global_func(name, allow_missing)
  
file_path: mxnet/python/mxnet/_ffi/function.py
imports: import os
  import sys
  import ctypes
  from ..base import _LIB, check_call
  from .base import py_str, c_str
label_desc: Use image node_id 1 for calling a global function with example usage: get_global_func(name, allow_missing) and returns: _get_global_func