docs: private synchronized Producer<Void> getLocalFileFetchToEncodedMemoryPrefetchSequence() {
      if (FrescoSystrace.isTracing()) {
        FrescoSystrace.beginSection(
            "ProducerSequenceFactory#getLocalFileFetchToEncodedMemoryPrefetchSequence");
      }
      if (mLocalFileFetchToEncodedMemoryPrefetchSequence == null) {
        if (FrescoSystrace.isTracing()) {
          FrescoSystrace.beginSection(
              "ProducerSequenceFactory#getLocalFileFetchToEncodedMemoryPrefetchSequence:init");
        }
        mLocalFileFetchToEncodedMemoryPrefetchSequence =
            ProducerFactory.newSwallowResultProducer(
                getBackgroundLocalFileFetchToEncodeMemorySequence());
        if (FrescoSystrace.isTracing()) {
          FrescoSystrace.endSection();
        }
      }
      if (FrescoSystrace.isTracing()) {
        FrescoSystrace.endSection();
      }
      return mLocalFileFetchToEncodedMemoryPrefetchSequence;
    }