@java.lang.Override
    public boolean hasStringValue() {
      return valueCase_ == 1;
    }
<pre>
String type value.
</pre>

<code>string string_value = 1;</code>

@return Whether the stringValue field is set.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetValue.java