@java.lang.Override
  public final boolean isInitialized() {
    byte isInitialized = memoizedIsInitialized;
    if (isInitialized == 1) return true;
    if (isInitialized == 0) return false;

    memoizedIsInitialized = 1;
    return true;
  }
<pre>
The tasks's tag.

The tag is less than 500 characters.

SDK compatibility: Although the SDK allows tags to be either
string or
[bytes](https://cloud.google.com/appengine/docs/standard/java/javadoc/com/google/appengine/api/taskqueue/TaskOptions.html#tag-byte:A-),
only UTF-8 encoded tags can be used in Cloud Tasks. If a tag isn't UTF-8
encoded, the tag will be empty when the task is returned by Cloud Tasks.
</pre>

<code>string tag = 2;</code>

@return The bytes for tag.
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/PullMessage.java