code: def softmax(x, dim):
      return _softmax(x, dim)
  
file_path: dgl/tests/backend/__init__.py
imports: import importlib
  import os
  import sys
  import numpy
  from dgl.backend import *
  from dgl.nn import *
  from .None import backend_unittest
label_desc: Use image node_id 10 for calling a global function with example usage: softmax(x, dim) and returns: _softmax