public CloseableReference<Bitmap> createBitmap(
      int width, int height, Bitmap.Config bitmapConfig, @Nullable Object callerContext) {
    return createBitmapInternal(width, height, bitmapConfig);
  }
Creates a bitmap of the specified width and height.

@param width the width of the bitmap
@param height the height of the bitmap
@param bitmapConfig the Bitmap.Config used to create the Bitmap
@param callerContext the Tag to track who create the Bitmap
@return a reference to the bitmap
@throws TooManyBitmapsException if the pool is full
@throws java.lang.OutOfMemoryError if the Bitmap cannot be allocated
imagepipeline-base/src/main/java/com/facebook/imagepipeline/bitmaps/PlatformBitmapFactory.java