public Builder setGceInstance(
          com.google.cloud.workstations.v1beta.WorkstationConfig.Host.GceInstance value) {
        if (gceInstanceBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          config_ = value;
          onChanged();
        } else {
          gceInstanceBuilder_.setMessage(value);
        }
        configCase_ = 1;
        return this;
      }
<pre>
Specifies a Compute Engine instance as the host.
</pre>

<code>
.google.cloud.workstations.v1beta.WorkstationConfig.Host.GceInstance gce_instance = 1;
</code>
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java