public Builder mergeLastAttempt(com.google.cloud.tasks.v2beta3.Attempt value) {
      if (lastAttemptBuilder_ == null) {
        if (((bitField0_ & 0x00000400) != 0)
            && lastAttempt_ != null
            && lastAttempt_ != com.google.cloud.tasks.v2beta3.Attempt.getDefaultInstance()) {
          getLastAttemptBuilder().mergeFrom(value);
        } else {
          lastAttempt_ = value;
        }
      } else {
        lastAttemptBuilder_.mergeFrom(value);
      }
      if (lastAttempt_ != null) {
        bitField0_ |= 0x00000400;
        onChanged();
      }
      return this;
    }
<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