A list of WebKit message handler names that a user script can send.
For example, if the native platform can receive messages through this:
window.webkit.messageHandlers.foo.postMessage('...')
then, this property would be:
webkitMessageHandlerNames: ['foo']
Use this configuration to create an instance of Messaging for WebKit platforms (iOS, macOS 11+).
Please see WebkitMessagingTransport for details on how messages are sent/received
Example