private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.tasks.v2beta3.Attempt,
            com.google.cloud.tasks.v2beta3.Attempt.Builder,
            com.google.cloud.tasks.v2beta3.AttemptOrBuilder>
        getLastAttemptFieldBuilder() {
      if (lastAttemptBuilder_ == null) {
        lastAttemptBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.tasks.v2beta3.Attempt,
                com.google.cloud.tasks.v2beta3.Attempt.Builder,
                com.google.cloud.tasks.v2beta3.AttemptOrBuilder>(
                getLastAttempt(), getParentForChildren(), isClean());
        lastAttempt_ = null;
      }
      return lastAttemptBuilder_;
    }
<pre>
Output only. The status of the task's last attempt.
</pre>

<code>.google.cloud.tasks.v2beta3.Attempt last_attempt = 9;</code>
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/Task.java