docs: public static void clearResourceBitmaps() {
          if (!AndroidGraphicFactory.KEEP_RESOURCE_BITMAPS) {
              return;
          }
          synchronized (RESOURCE_BITMAPS) {
              for (Pair<android.graphics.Bitmap, Integer> p : RESOURCE_BITMAPS.values()) {
                  p.first.recycle();
                  if (AndroidGraphicFactory.DEBUG_BITMAPS) {
                      rInstances.decrementAndGet();
                  }
              }
              if (AndroidGraphicFactory.DEBUG_BITMAPS) {
                  rBitmaps.clear();
              }
              RESOURCE_BITMAPS.clear();
          }
      }