private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpec,
            com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpec.Builder,
            com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpecOrBuilder>
        getCustomRangeBucketSpecFieldBuilder() {
      if (customRangeBucketSpecBuilder_ == null) {
        if (!(rangeFacetConfigCase_ == 6)) {
          rangeFacetConfig_ =
              com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpec.getDefaultInstance();
        }
        customRangeBucketSpecBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpec,
                com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpec.Builder,
                com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpecOrBuilder>(
                (com.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpec)
                    rangeFacetConfig_,
                getParentForChildren(),
                isClean());
        rangeFacetConfig_ = null;
      }
      rangeFacetConfigCase_ = 6;
      onChanged();
      return customRangeBucketSpecBuilder_;
    }
<pre>
Custom range facet bucket config.
</pre>

<code>
.google.cloud.visionai.v1.FacetProperty.CustomRangeBucketSpec custom_range_bucket_spec = 6;
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetProperty.java