public final UnaryCallable<
          ListUsableWorkstationConfigsRequest, ListUsableWorkstationConfigsPagedResponse>
      listUsableWorkstationConfigsPagedCallable() {
    return stub.listUsableWorkstationConfigsPagedCallable();
  }
Returns all workstation configurations in the specified cluster on which the caller has the
"workstations.workstation.create" permission.

<p>Sample code:

<pre>{@code
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in
// https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
try (WorkstationsClient workstationsClient = WorkstationsClient.create()) {
  ListUsableWorkstationConfigsRequest request =
      ListUsableWorkstationConfigsRequest.newBuilder()
          .setParent(
              WorkstationClusterName.of("[PROJECT]", "[LOCATION]", "[WORKSTATION_CLUSTER]")
                  .toString())
          .setPageSize(883849137)
          .setPageToken("pageToken873572522")
          .build();
  ApiFuture<WorkstationConfig> future =
      workstationsClient.listUsableWorkstationConfigsPagedCallable().futureCall(request);
  // Do something.
  for (WorkstationConfig element : future.get().iterateAll()) {
    // doThingsWith(element);
  }
}
}</pre>
java-workstations/google-cloud-workstations/src/main/java/com/google/cloud/workstations/v1/WorkstationsClient.java