code: def test_keras_linear_131_full(datadir):
      _test_keras_linear_131(datadir.file("keras_linear_131"))
      _test_keras_linear_131(datadir.file("keras_linear_131_sigmoid"))
      _test_keras_linear_131(
          datadir.file("keras_linear_131_sigmoid_output_activation")
      )
      _test_keras_linear_131(
          datadir.file(
              "keras_linear_131_sigmoid_softplus_output_activation"
          )
      )
  
imports: import numpy
  import pyomo.environ
  import pytest
  from pyomo.common.dependencies import DeferredImportError
  from omlt.dependencies import keras, keras_available
  from conftest import get_neural_network_data
  from omlt.block import OmltBlock
  from omlt.neuralnet import FullSpaceNNFormulation, ReducedSpaceNNFormulation
  from omlt.neuralnet.activations import ComplementarityReLUActivation
  from omlt.scaling import OffsetScaling
label_desc: Use image node_id 6 for calling a global function with example usage: test_keras_linear_131_full(datadir) without return types