private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.vision.v1p4beta1.WebDetection.WebImage,
            com.google.cloud.vision.v1p4beta1.WebDetection.WebImage.Builder,
            com.google.cloud.vision.v1p4beta1.WebDetection.WebImageOrBuilder>
        getPartialMatchingImagesFieldBuilder() {
      if (partialMatchingImagesBuilder_ == null) {
        partialMatchingImagesBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.vision.v1p4beta1.WebDetection.WebImage,
                com.google.cloud.vision.v1p4beta1.WebDetection.WebImage.Builder,
                com.google.cloud.vision.v1p4beta1.WebDetection.WebImageOrBuilder>(
                partialMatchingImages_,
                ((bitField0_ & 0x00000004) != 0),
                getParentForChildren(),
                isClean());
        partialMatchingImages_ = null;
      }
      return partialMatchingImagesBuilder_;
    }
<pre>
Partial matching images from the Internet.
Those images are similar enough to share some key-point features. For
example an original image will likely have partial matching for its crops.
</pre>

<code>
repeated .google.cloud.vision.v1p4beta1.WebDetection.WebImage partial_matching_images = 3;
</code>
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/WebDetection.java