def METHOD_NAME(testapp, analysis_step_atac_encode4_alignment, software_version):
    item = {
        'analysis_step': analysis_step_atac_encode4_alignment['@id'],
        'minor_version': 0,
        'software_versions': [
            software_version['@id'],
        ],
    }
    return testapp.post_json('/analysis_step_version', item).json['@graph'][0]