@java.lang.Override
  public java.lang.String getEventMessage() {
    java.lang.Object ref = eventMessage_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      eventMessage_ = s;
      return s;
    }
  }
<pre>
Human readable string of the event like "There are more than 6 people in
the scene". or "Shelf is empty!".
</pre>

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

@return The eventMessage.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AppPlatformEventBody.java