code: def dest(x):
      rng = np.random.RandomState(389)
      h = PF.affine(x, 3, rng=rng)
      return h
  
imports: import pytest
  import numpy
  import nnabla
  import nnabla.functions
  import nnabla.parametric_functions
  from nnabla.testing import assert_allclose
  from helper import get_saved_test_model, forward_variable_and_check_equal, forward_variable, assert_topology, dump_network_topology
  import legacy_nnp_graph
  from nnabla.utils import nnp_graph
label_desc: Use image node_id 2 for calling the SimpleModuleTest obj's underlying member method code with example usage: obj.dest(x) and returns: h