How to use the pykeepass.baseelement.BaseElement function in pykeepass

# FIXME python2
from __future__ import absolute_import, unicode_literals
from future.utils import python_2_unicode_compatible

from lxml.builder import E
from lxml.etree import Element, _Element
from lxml.objectify import ObjectifiedElement

import pykeepass.entry
from pykeepass.baseelement import BaseElement


# FIXME python2
@python_2_unicode_compatible
class Group(BaseElement):

    def __init__(self, name=None, element=None, icon=None, notes=None,
                 kp=None, expires=None, expiry_time=None):

        self._kp = kp

        if element is None:
            super(Group, self).__init__(
                element=Element('Group'),
                kp=kp,
                expires=expires,
                expiry_time=expiry_time,
                icon=icon
            )
            self._element.append(E.Name(name))
            if notes:

logger = logging.getLogger(__name__)
reserved_keys = [
    'Title',
    'UserName',
    'Password',
    'URL',
    'Tags',
    'IconID',
    'Times',
    'History',
    'Notes'
]

# FIXME python2
@python_2_unicode_compatible
class Entry(BaseElement):

    def __init__(self, title=None, username=None, password=None, url=None,
                 notes=None, tags=None, expires=False, expiry_time=None,
                 icon=None, autotype_sequence=None, autotype_enabled=True,
                 element=None, kp=None):

        self._kp = kp

        if element is None:
            super(Entry, self).__init__(
                element=Element('Entry'),
                kp=kp,
                expires=expires,
                expiry_time=expiry_time,
                icon=icon
            )