def _get_network_output(spec):
    """
    :param spec : CoreML Specification
    :returns network output names
    """
    network_output_names = []
    for _out in spec.description.output:
        network_output_names.append(_out.name)
    return network_output_names

    :param spec : CoreML Specification
    :returns network output names
    
coremltools/converters/mil/backend/nn/passes/mlmodel_passes.py