code: def test_doctests__network():
      """run the examples in the docstrings using the doctest module
      that require the network
      """
      with proj_network_env():
          pyproj.network.set_network_enabled(active=True)
          with pytest.warns(FutureWarning):
              failure_count, _ = doctest.testmod(
                  pyproj.transformer, verbose=True
              )
  
      assert (
          failure_count == 0
      ), f"{failure_count} of the doctests failed"
  
imports: import doctest
  import warnings
  import pytest
  import pyproj
  from test.conftest import proj_network_env
label_desc: Use image node_id 2 for calling a global function with example usage: test_doctests__network() without return types