@java.lang.Override
    public boolean hasDatetimeValue() {
      return valueCase_ == 5;
    }
<pre>
Value of date time type annotation.
</pre>

<code>string datetime_value = 5;</code>

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