public Builder setTravelDuration(com.google.protobuf.Duration.Builder builderForValue) {
        if (travelDurationBuilder_ == null) {
          travelDuration_ = builderForValue.build();
        } else {
          travelDurationBuilder_.setMessage(builderForValue.build());
        }
        bitField0_ |= 0x00000002;
        onChanged();
        return this;
      }
<pre>
The number of seconds required to travel to the job location from the
query location. A duration of 0 seconds indicates that the job isn't
reachable within the requested duration, but was returned as part of an
expanded query.
</pre>

<code>.google.protobuf.Duration travel_duration = 2;</code>
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/SearchJobsResponse.java