@classmethod
def send_cloud_message(cls, business_id=None, store_id=None, class_name=
    None, package_name=None, device_id=None, serial_number=None, data='{}',
    collapse_key=None, ttl=900):
    """
        Send a message from the cloud to your application running at a Poynt terminal.

        Keyword arguments:
        business_id (str): the business ID
        store_id (str): the store ID
        class_name (str): the class name of the receiver in your app
        package_name (str): the package name of your app
        device_id (str): the device ID
        serial_number (str): the serial number
        data (str, optional): the data to send. defaults to {}
        collapse_key (str, optional): dedupe messages on this key
        ttl (int, optional): how long until the cloud message expires. defaults
                             to 900 seconds
        """
    message = {'businessId': business_id, 'storeId': store_id, 'deviceId':
        device_id, 'recipient': {'className': class_name, 'packageName':
        package_name}}
    if serial_number is not None:
        message['serialNum'] = serial_number
    if collapse_key is not None:
        message['collapseKey'] = collapse_key
    if ttl is not None:
        message['ttl'] = ttl
    if data is not None:
        message['data'] = data
    return cls.send_raw_cloud_message(message)
