code: public GenericDraweeHierarchyBuilder setFailureImage(
        Drawable failureDrawable, @Nullable ScalingUtils.ScaleType failureImageScaleType) {
      mFailureImage = failureDrawable;
      mFailureImageScaleType = failureImageScaleType;
      return this;
    }
docs: Sets the failure image and its scale type.
  
  @param failureDrawable drawable to be used as failure image
  @param failureImageScaleType scale type for the failure image
  @return modified instance of this builder