public List<Notification> getPages() {
            return mPages;
        }
Get the array of additional pages of content for displaying this notification. The
current notification forms the first page, and elements within this array form
subsequent pages. This field can be used to separate a notification into multiple
sections.

@return the pages for this notification
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/compat/NotificationCompat.java