code: def Conv3DImpl(self, request):
      impl_module_name, impl_name = request.param
      try:
          mod = importlib.import_module(impl_module_name)
          return getattr(mod, impl_name)
      except (ImportError, AttributeError):
          pytest.skip("{} not available".format(impl_module_name))
  
imports: import numpy
  import pytest
  import importlib
  import theano
  from theano import tensor
  import lasagne
  from lasagne.utils import floatX, as_tuple
label_desc: Use image node_id 1 for calling the TestConv3DLayerImplementations obj's underlying member method code with example usage: obj.Conv3DImpl(request) and returns: getattr