# Create and save a model having 2 signatures.
    model = MultipleSignatureModel()

    signatures = {
        'sig1': model.matmul.get_concrete_function(
            tensor_spec.TensorSpec(shape=(1, 4), dtype=dtypes.float32)
        ),
        'sig2': model.conv.get_concrete_function(
            tensor_spec.TensorSpec(shape=(1, 3, 4, 3), dtype=dtypes.float32)
        ),
    }
    saved_model_save.save(