def METHOD_NAME(client, note, invitation):
    from Crypto.Hash import HMAC, SHA256
    import urllib.parse
    SHORT_PHRASE = ''
    ACTION_EDITOR_NAME = ''
    ACTION_EDITOR_INVITED_ID = ''
    ACTION_EDITOR_ACCEPTED_ID = ''
    ACTION_EDITOR_DECLINED_ID = ''
    HASH_SEED = ''
    JOURNAL_REQUEST_ID = ''
    SUPPORT_GROUP = ''
    VENUE_ID = ''
    if hasattr(note, 'note'):
        note=edit.note
        user=note.content['user']['value']
        key=note.content['key']['value']
        response=note.content['response']['value']
    else:
        user=note.content['user']
        key=note.content['key']
        response=note.content['response']
    user = urllib.parse.unquote(user)
    hashkey = HMAC.new(HASH_SEED.encode(), digestmod=SHA256).update(user.encode()).hexdigest()
    if hashkey == key and client.get_groups(id=ACTION_EDITOR_INVITED_ID, member=user):
        if (response == 'Yes'):
            action = 'accepted'
            client.remove_members_from_group(ACTION_EDITOR_DECLINED_ID, user)
            client.add_members_to_group(ACTION_EDITOR_ACCEPTED_ID, user)
            subject = '[{SHORT_PHRASE}] {SHORT_PHRASE} Invitation accepted'.format(SHORT_PHRASE=SHORT_PHRASE, ACTION_EDITOR_NAME=ACTION_EDITOR_NAME)
            message = '''Thank you for accepting the invitation to be a {ACTION_EDITOR_NAME} for {SHORT_PHRASE}.