'Args:
sync_config(SyncConfig)
full_state(bool): The full_state flag as specified by user
since_token(StreamToken): The token supplied by user, or None.
now_token(StreamToken): The token to sync up to.'

def __init__(self, sync_config, full_state, since_token, now_token):

    self.sync_config = sync_config
    self.full_state = full_state
    self.since_token = since_token
    self.now_token = now_token
    self.presence = []
    self.account_data = []
    self.joined = []
    self.invited = []
    self.archived = []
    self.device = []
