public ImageRequestBuilder setBytesRange(@Nullable BytesRange bytesRange) {
    this.mBytesRange = bytesRange;
    return this;
  }
Set the range of bytes to request from the network (in the case of an HTTP request). This is
only used if {@link ImagePipelineExperiments#isPartialImageCachingEnabled()} is true and your
{@link com.facebook.imagepipeline.producers.NetworkFetcher} makes use of it.

<p>Even where this is supported, there is no contract that this must be followed. The response
may contain the full image data, more than is requested or less, depending on what's already in
cache and external factors.

@param bytesRange the range of bytes
@return the modified builder instance
imagepipeline/src/main/java/com/facebook/imagepipeline/request/ImageRequestBuilder.java