code: def assert_parameter_scope_empty():
      params = nn.get_parameters()
      assert len(params) == 0
  
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 9 for calling a global function with example usage: assert_parameter_scope_empty() without return types