imagepipeline/src/main/java/com/facebook/imagepipeline/core/ImagePipeline.java [493:507]:
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    if (!mIsPrefetchEnabledSupplier.get()) {
      return DataSources.immediateFailedDataSource(PREFETCH_EXCEPTION);
    }
    try {
      Producer<Void> producerSequence =
          mProducerSequenceFactory.getEncodedImagePrefetchProducerSequence(imageRequest);
      return submitPrefetchRequest(
          producerSequence,
          imageRequest,
          ImageRequest.RequestLevel.FULL_FETCH,
          callerContext,
          priority,
          requestListener);
    } catch (Exception exception) {
      return DataSources.immediateFailedDataSource(exception);
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imagepipeline/src/main/java/com/facebook/imagepipeline/core/ImagePipeline.java [557:571]:
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      if (!mIsPrefetchEnabledSupplier.get()) {
        return DataSources.immediateFailedDataSource(PREFETCH_EXCEPTION);
      }
      try {
        Producer<Void> producerSequence =
            mProducerSequenceFactory.getEncodedImagePrefetchProducerSequence(imageRequest);
        return submitPrefetchRequest(
            producerSequence,
            imageRequest,
            ImageRequest.RequestLevel.FULL_FETCH,
            callerContext,
            priority,
            requestListener);
      } catch (Exception exception) {
        return DataSources.immediateFailedDataSource(exception);
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