@Override
  public void putOriginExtra(@Nullable String origin, @Nullable String subcategory) {
    mExtras.put(HasExtraData.KEY_ORIGIN, origin);
    mExtras.put(HasExtraData.KEY_ORIGIN_SUBCATEGORY, subcategory);
  }
Calls {@code onPriorityChanged} on each element of the list. Does nothing if list == null
imagepipeline/src/main/java/com/facebook/imagepipeline/producers/BaseProducerContext.java