How to use the praw.internal._modify_relationship function in praw

remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    make_moderator = (deprecated(msg="Please use `add_moderator` instead.")
                                (_modify_relationship('moderator',
                                                      is_sub=True)))
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',
                                                   unlink=True, is_sub=True)

    # Generic listing selectors
    get_controversial = _get_sorter('controversial')
    get_hot = _get_sorter('')
    get_new = _get_sorter('new')
    get_top = _get_sorter('top')

    # Explicit listing selectors
    get_controversial_from_all = _get_sorter('controversial', t='all')
    get_controversial_from_day = _get_sorter('controversial', t='day')
    get_controversial_from_hour = _get_sorter('controversial', t='hour')
    get_controversial_from_month = _get_sorter('controversial', t='month')
    get_controversial_from_week = _get_sorter('controversial', t='week')
    get_controversial_from_year = _get_sorter('controversial', t='year')
    get_new_by_date = (deprecated(msg="Please use `get_new` instead.")

('submit', SubmitMixin),
                ('subscribe', SubscribeMixin),
                ('unsubscribe', SubscribeMixin),
                ('update_settings', MCMix),
                ('upload_image', MCMix))

    # Subreddit banned
    add_ban = _modify_relationship('banned', is_sub=True)
    remove_ban = _modify_relationship('banned', unlink=True, is_sub=True)

    # Subreddit contributors
    add_contributor = _modify_relationship('contributor', is_sub=True)
    remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit muted
    add_mute = _modify_relationship('muted', is_sub=True)
    remove_mute = _modify_relationship('muted', is_sub=True, unlink=True)

    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',
                                                   unlink=True, is_sub=True)

    # Generic listing selectors

def friend(self, note=None, _unfriend=False):
        """Friend the user.

        :param note: A personal note about the user. Requires reddit Gold.
        :param _unfriend: Unfriend the user. Please use :meth:`unfriend`
            instead of setting this parameter manually.

        :returns: The json response from the server.

        """
        self.reddit_session.evict(self.reddit_session.config['friends'])

        # Requests through password auth use /api/friend
        # Requests through oauth use /api/v1/me/friends/{username}
        if not self.reddit_session.is_oauth_session():
            modifier = _modify_relationship('friend', unlink=_unfriend)
            data = {'note': note} if note else {}
            return modifier(self.reddit_session.user, self, **data)

        url = self.reddit_session.config['friend_v1'].format(user=self.name)
        # This endpoint wants the data to be a string instead of an actual
        # dictionary, although it is not required to have any content for adds.
        # Unfriending does require the 'id' key.
        if _unfriend:
            data = {'id': self.name}
        else:
            # We cannot send a null or empty note string.
            data = {'note': note} if note else {}
        data = dumps(data)
        method = 'DELETE' if _unfriend else 'PUT'
        return self.reddit_session.request_json(url, data=data, method=method)

# Subreddit banned
    add_ban = _modify_relationship('banned', is_sub=True)
    remove_ban = _modify_relationship('banned', unlink=True, is_sub=True)

    # Subreddit contributors
    add_contributor = _modify_relationship('contributor', is_sub=True)
    remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit muted
    add_mute = _modify_relationship('muted', is_sub=True)
    remove_mute = _modify_relationship('muted', is_sub=True, unlink=True)

    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',
                                                   unlink=True, is_sub=True)

    # Generic listing selectors
    get_controversial = _get_sorter('controversial')
    get_hot = _get_sorter('')
    get_new = _get_sorter('new')
    get_top = _get_sorter('top')

def friend(self):
        """Friend the user.

        :returns: The json response from the server.

        """
        self.reddit_session.evict(self.reddit_session.config['friends'])
        return _modify_relationship('friend')(self.reddit_session.user, self)

('submit', SubmitMixin),
                ('subscribe', SubscribeMixin),
                ('unsubscribe', SubscribeMixin),
                ('update_settings', MCMix),
                ('upload_image', MCMix))

    # Subreddit banned
    add_ban = _modify_relationship('banned', is_sub=True)
    remove_ban = _modify_relationship('banned', unlink=True, is_sub=True)

    # Subreddit contributors
    add_contributor = _modify_relationship('contributor', is_sub=True)
    remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit muted
    add_mute = _modify_relationship('muted', is_sub=True)
    remove_mute = _modify_relationship('muted', is_sub=True, unlink=True)

    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',
                                                   unlink=True, is_sub=True)

    # Generic listing selectors

remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit muted
    add_mute = _modify_relationship('muted', is_sub=True)
    remove_mute = _modify_relationship('muted', is_sub=True, unlink=True)

    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',
                                                   unlink=True, is_sub=True)

    # Generic listing selectors
    get_controversial = _get_sorter('controversial')
    get_hot = _get_sorter('')
    get_new = _get_sorter('new')
    get_top = _get_sorter('top')

    # Explicit listing selectors
    get_controversial_from_all = _get_sorter('controversial', t='all')
    get_controversial_from_day = _get_sorter('controversial', t='day')
    get_controversial_from_hour = _get_sorter('controversial', t='hour')
    get_controversial_from_month = _get_sorter('controversial', t='month')
    get_controversial_from_week = _get_sorter('controversial', t='week')
    get_controversial_from_year = _get_sorter('controversial', t='year')

make_contributor = (deprecated(msg="Please use `add_contributor` "
                                       "instead.")
                                  (_modify_relationship('contributor',
                                                        is_sub=True)))
    remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    make_moderator = (deprecated(msg="Please use `add_moderator` instead.")
                                (_modify_relationship('moderator',
                                                      is_sub=True)))
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',
                                                   unlink=True, is_sub=True)

    # Generic listing selectors
    get_controversial = _get_sorter('controversial')
    get_hot = _get_sorter('')
    get_new = _get_sorter('new')
    get_top = _get_sorter('top')

    # Explicit listing selectors
    get_controversial_from_all = _get_sorter('controversial', t='all')
    get_controversial_from_day = _get_sorter('controversial', t='day')
    get_controversial_from_hour = _get_sorter('controversial', t='hour')

('upload_image', MCMix))

    # Subreddit banned
    add_ban = _modify_relationship('banned', is_sub=True)
    remove_ban = _modify_relationship('banned', unlink=True, is_sub=True)

    # Subreddit contributors
    add_contributor = _modify_relationship('contributor', is_sub=True)
    remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit muted
    add_mute = _modify_relationship('muted', is_sub=True)
    remove_mute = _modify_relationship('muted', is_sub=True, unlink=True)

    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',
                                                   unlink=True, is_sub=True)

    # Generic listing selectors
    get_controversial = _get_sorter('controversial')
    get_hot = _get_sorter('')
    get_new = _get_sorter('new')
    get_top = _get_sorter('top')

('set_flair_csv', MFMix),
                ('set_settings', MCMix),
                ('set_stylesheet', MCMix),
                ('submit', SubmitMixin),
                ('subscribe', SubscribeMixin),
                ('unsubscribe', SubscribeMixin),
                ('update_settings', MCMix),
                ('upload_image', MCMix))

    # Subreddit banned
    add_ban = _modify_relationship('banned', is_sub=True)
    remove_ban = _modify_relationship('banned', unlink=True, is_sub=True)

    # Subreddit contributors
    add_contributor = _modify_relationship('contributor', is_sub=True)
    remove_contributor = _modify_relationship('contributor', unlink=True,
                                              is_sub=True)
    # Subreddit moderators
    add_moderator = _modify_relationship('moderator', is_sub=True)
    remove_moderator = _modify_relationship('moderator', unlink=True,
                                            is_sub=True)
    # Subreddit muted
    add_mute = _modify_relationship('muted', is_sub=True)
    remove_mute = _modify_relationship('muted', is_sub=True, unlink=True)

    # Subreddit wiki banned
    add_wiki_ban = _modify_relationship('wikibanned', is_sub=True)
    remove_wiki_ban = _modify_relationship('wikibanned', unlink=True,
                                           is_sub=True)
    # Subreddit wiki contributors
    add_wiki_contributor = _modify_relationship('wikicontributor', is_sub=True)
    remove_wiki_contributor = _modify_relationship('wikicontributor',