public Builder mergeRange(com.google.cloud.visionai.v1.FacetBucket.Range value) {
      if (rangeBuilder_ == null) {
        if (bucketValueCase_ == 4
            && bucketValue_
                != com.google.cloud.visionai.v1.FacetBucket.Range.getDefaultInstance()) {
          bucketValue_ =
              com.google.cloud.visionai.v1.FacetBucket.Range.newBuilder(
                      (com.google.cloud.visionai.v1.FacetBucket.Range) bucketValue_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          bucketValue_ = value;
        }
        onChanged();
      } else {
        if (bucketValueCase_ == 4) {
          rangeBuilder_.mergeFrom(value);
        } else {
          rangeBuilder_.setMessage(value);
        }
      }
      bucketValueCase_ = 4;
      return this;
    }
<pre>
Range value.
</pre>

<code>.google.cloud.visionai.v1.FacetBucket.Range range = 4;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetBucket.java