@java.lang.Override
    public boolean hasStrValue() {
      return valueCase_ == 3;
    }
<pre>
Value of string type annotation.
</pre>

<code>string str_value = 3;</code>

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