SDK callbacks A callback to handle events from walkthrough campaignsInjector walkthrough callback A callback to handle the state of a customerCustomer state callback A callback to handle events from banner campaignsInjector banner callback A callback to handle events from injectorInjector callback A callback to handle events about locationLocation callback A callback to handle events from Synerise notifications.Notification callback A callback to handle state of a clientRegister for push callback A callback to handle events from in-app message campaignsIn-app messaging callback A callback to handle content widget actionsContent widget callbacks