public com.google.cloud.workstations.v1beta.WorkstationCluster.Builder
        addWorkstationClustersBuilder() {
      return getWorkstationClustersFieldBuilder()
          .addBuilder(com.google.cloud.workstations.v1beta.WorkstationCluster.getDefaultInstance());
    }
<pre>
The requested workstation clusters.
</pre>

<code>repeated .google.cloud.workstations.v1beta.WorkstationCluster workstation_clusters = 1;
</code>
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/ListWorkstationClustersResponse.java