Handler for In-app actions that copies the payload to the clipboard.
The CopyPayloadInAppCallback class provides a default implementation
for handling in-app messages by copying the associated payload
to the clipboard when the in-app message is tapped.
Handler for In-app actions that allows custom implementation for handling
clicks and dismiss events. The CustomInAppCallback class provides
a flexible way to implement custom handling for in-app
clicks using the InAppClickHandler and dismiss events
using the InAppDismissedHandler.
Handler for In-app actions that performs no actions.
The EmptyInAppCallback class provides a default implementation for handling
in-app messages without performing any actions upon tapping or dismissing
the in-app message
Handler for In-app actions.
It provides a default implementation for handling in-app messages
by opening an associated URL when an in-app message is tapped.
