public Builder clearGceInstance() {
        if (gceInstanceBuilder_ == null) {
          if (configCase_ == 1) {
            configCase_ = 0;
            config_ = null;
            onChanged();
          }
        } else {
          if (configCase_ == 1) {
            configCase_ = 0;
            config_ = null;
          }
          gceInstanceBuilder_.clear();
        }
        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