@java.lang.Override
  public boolean hasScheduleTime() {
    return ((bitField0_ & 0x00000001) != 0);
  }
<pre>
The time when the task is scheduled to be attempted.

For App Engine queues, this is when the task will be attempted or retried.

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

<code>.google.protobuf.Timestamp schedule_time = 4;</code>

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