SLRCustom Notification
open class SLRCustomNotification(val title: String? = null, val description: String? = null, @LayoutRes val layoutId: Int? = null, @IdRes val actionId: Int? = null, @ColorRes val iconBackgroundColor: Int? = null, val iconUrl: String? = null) : NotificationBuilder
Extendable class. Used to send custom notifications to the StreamLayer SDK overlay.