private static ListChanges acquire(int start, int to, int count) {
        ListChanges listChanges = sListChanges.acquire();
        if (listChanges == null) {
            listChanges = new ListChanges();
        }
        listChanges.start = start;
        listChanges.to = to;
        listChanges.count = count;
        return listChanges;
    }
Notify registered callbacks that elements were deleted.

@param list  The list that changed.
@param start The index of the first element to be removed.
@param count The number of elements removed.
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/util/obs/ListChangeRegistry.java