def METHOD_NAME(self, value):
    """Create a string to send.
    Args:
        value: simple, tuple ot list
    Returns:
        (str): formated string
    """
    ret = ARRAY_SEPARATOR
    if value is not None:
        if isinstance(value, (list, tuple)):
            for item in value:
                ret += str(item) + ARRAY_SEPARATOR
        else:
            ret += str(value)
    return ret