public boolean hasResponseTime() {
      return ((bitField0_ & 0x00000004) != 0);
    }
<pre>
Output only. The time that this attempt response was received.

`response_time` will be truncated to the nearest microsecond.
</pre>

<code>.google.protobuf.Timestamp response_time = 3;</code>

@return Whether the responseTime field is set.
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/Attempt.java