sendCustomEvent()

Sends a custom event to the client-side chat window for a chat with a specific chat key. Available in API version 29.0 or later.

Name	Type	Description
`chatKey`	String	The `chatKey` associated with the chat to which to send a custom event.
`type`	String	The name of the custom event you want to send to the chat window.
`data`	String	Additional data you want to send to the chat window along with the custom event.
`callback`	function	JavaScript method called upon completion of the method.

This method is asynchronous so it returns its response in an object in a callback method. The response object contains the following properties:

Name	Type	Description
`success`	Boolean	`true` if sending the custom event was successful; `false` if sending the custom event wasn’t successful.