code: def __getstate__(self):
      return self.hello_str, self.integer, self.tensor
  
file_path: dgl/tests/dist/python/rpc_basic.py
imports: import os
  import backend
  import dgl
  from numpy.testing import assert_array_equal
label_desc: Use image node_id 2 for calling the HelloResponse obj's underlying member method code with example usage: obj.__getstate__() and returns: self,  self,  self