How to use the vcard.VCardBehavior function in vcard

def splitFields(string):
    """Return a list of strings or lists from a Name or Address."""
    return [toListOrString(i) for i in string.split(';')]

def toList(stringOrList):
    if isinstance(stringOrList, basestring):
        return [stringOrList]
    return stringOrList

def serializeFields(obj, order):
    """Turn an object's fields into a ';' and ',' seperated string."""
    return ';'.join([','.join(toList(getattr(obj, val))) for val in order])

NAME_ORDER = ('family', 'given', 'additional', 'prefix', 'suffix')

class NameBehavior(VCardBehavior):
    """A structured name."""
    hasNative = True

    @staticmethod
    def transformToNative(obj):
        """Turn obj.value into a Name."""
        if obj.isNative: return obj
        obj.isNative = True
        obj.value = Name(**dict(zip(NAME_ORDER, splitFields(obj.value))))
        return obj

    @staticmethod
    def transformFromNative(obj):
        """Replace the Name in obj.value with a string."""
        obj.isNative = False
        obj.value = serializeFields(obj.value, NAME_ORDER)

obj.isNative = True
        obj.value = Name(**dict(zip(NAME_ORDER, splitFields(obj.value))))
        return obj

    @staticmethod
    def transformFromNative(obj):
        """Replace the Name in obj.value with a string."""
        obj.isNative = False
        obj.value = serializeFields(obj.value, NAME_ORDER)
        return obj
registerBehavior(NameBehavior, 'N')

ADDRESS_ORDER = ('box', 'extended', 'street', 'city', 'region', 'code', 
                 'country')

class AddressBehavior(VCardBehavior):
    """A structured address."""
    hasNative = True

    @staticmethod
    def transformToNative(obj):
        """Turn obj.value into an Address."""
        if obj.isNative: return obj
        obj.isNative = True
        obj.value = Address(**dict(zip(ADDRESS_ORDER, splitFields(obj.value))))
        return obj

    @staticmethod
    def transformFromNative(obj):
        """Replace the Address in obj.value with a string."""
        obj.isNative = False
        obj.value = serializeFields(obj.value, ADDRESS_ORDER)

def __str__(self):
        lines = '\n'.join(self.toString(getattr(self, val)) for val in self.lines if getattr(self, val))
        one_line = tuple(self.toString(getattr(self, val), ' ') for val in self.one_line)
        lines += "\n%s, %s %s" % one_line
        if self.country:
            lines += '\n' + self.toString(self.country)
        return lines

    def __repr__(self):
        return "" % self.__str__().replace('\n', '\\n')

#------------------------ Registered Behavior subclasses -----------------------
class VCardBehavior(behavior.Behavior):
    allowGroup = True

class VCard3_0(VCardBehavior):
    """vCard 3.0 behavior."""
    name = 'VCARD'
    description = 'vCard 3.0, defined in rfc2426'
    versionString = '3.0'
    isComponent = True
    sortFirst = ('version', 'prodid', 'uid')
    knownChildren = {'N':         (1, 1, None),#min, max, behaviorRegistry id
                     'FN':        (1, 1, None),
                     'VERSION':   (1, 1, None),#required, auto-generated
                     'PRODID':    (0, 1, None),
                     'LABEL':     (0, None, None),
                     'UID':       (0, None, None),
                     'ADR':       (0, None, None)
                    }
                    
    @classmethod