human
I wrote the below code

    def convert_settings(lookup, data):
        'Helper    to    convert    settings    from    one    key    to    another\n                                '
        for old_key in list(data.keys()):
            if (old_key in lookup):
                data.setdefault(lookup[old_key], data[old_key])
                del data[old_key]
    checkstyle = XML.SubElement(xml_parent, 'hudson.plugins.checkstyle.CheckStylePublisher')
    checkstyle.set('plugin', 'checkstyle')
    convert_settings({'unHealthy': 'unhealthy', 'healthThreshold': 'health-threshold', 'defaultEncoding': 'default-encoding', 'canRunOnFailed': 'can-run-on-failed', 'shouldDetectModules': 'should-detect-modules'}, data)
    threshold_data = data.get('thresholds', {})
    for threshold in ['unstable', 'failed']:
        convert_settings({'totalAll': 'total-all', 'totalHigh': 'total-high', 'totalNormal': 'total-normal', 'totalLow': 'total-low'}, threshold_data.get(threshold, {}))
    helpers.build_trends_publisher('[CHECKSTYLE]    ', checkstyle, data)

What's a good function header?
assistant
#Here's a good function header.

def checkstyle(registry, xml_parent, data):