public com.google.cloud.visionai.v1.FacetValueOrBuilder getStartOrBuilder() {
        if (startBuilder_ != null) {
          return startBuilder_.getMessageOrBuilder();
        } else {
          return start_ == null
              ? com.google.cloud.visionai.v1.FacetValue.getDefaultInstance()
              : start_;
        }
      }
<pre>
Start of the range. Non-existence indicates some bound (e.g. -inf).
</pre>

<code>.google.cloud.visionai.v1.FacetValue start = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetBucket.java