docs: @SafeVarargs
      public final void addAll(T... items) {
          final int length = items.length;
          if (length == 0) {
              return;
          }
          synchronized (mLock) {
              final int position = getItemCount();
              Collections.addAll(mObjects, items);
              notifyItemRangeInserted(position, length);
          }
      }