human
I wrote the below code

    def transform(value, spec):
        u'Apply    transformations    to    make    the    output    JSON    comply    with    the\n                                expected    form.    This    function    applies:\n\n                                        (1)    Type    cast    to    nodes    with    "type"    property    (e.g.,    \'true\'    to\n                                                        True).    XML    field    values    are    all    in    text    so    this    step    is\n                                                        necessary    to    convert    it    to    valid    JSON    objects.\n\n                                        (2)    Squashes    "member"    nodes    to    lists.\n\n                                '
        if (len(spec) == 1):
            return from_str(value, spec)
        od = OrderedDict()
        for (k, v) in value.items():
            if k.startswith(u'@'):
                continue
            if (k not in spec):
                log.warning(u'Field    %s    is    not    defined    by    the    botocore    version    in    use', k)
                continue
            if (spec[k][u'type'] == u'list'):
                if (v is None):
                    od[k] = []
                elif (len(spec[k][u'member']) == 1):
                    if isinstance(v[u'member'], list):
                        od[k] = transform(v[u'member'], spec[k][u'member'])
                    else:
                        od[k] = [transform(v[u'member'], spec[k][u'member'])]
                elif isinstance(v[u'member'], list):
                    od[k] = [transform(o, spec[k][u'member']) for o in v[u'member']]
                elif isinstance(v[u'member'], OrderedDict):
                    od[k] = [transform(v[u'member'], spec[k][u'member'])]
                else:
                    raise ValueError(u'Malformatted    input')
            elif (spec[k][u'type'] == u'map'):
                if (v is None):
                    od[k] = {}
                else:
                    items =...

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

def xml_to_json_response(service_spec, operation, xml, result_node=None):