public Builder setJobStartTime(com.google.protobuf.Timestamp value) {
      if (jobStartTimeBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        jobStartTime_ = value;
      } else {
        jobStartTimeBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00200000;
      onChanged();
      return this;
    }
<pre>
The start timestamp of the job in UTC time zone. Typically this field
is used for contracting engagements. Invalid timestamps are ignored.
</pre>

<code>.google.protobuf.Timestamp job_start_time = 22;</code>
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/Job.java