public java.lang.String getServiceAttachmentUri() {
        java.lang.Object ref = serviceAttachmentUri_;
        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
          serviceAttachmentUri_ = s;
          return s;
        } else {
          return (java.lang.String) ref;
        }
      }
<pre>
Output only. Service attachment URI for the workstation cluster. The
service attachemnt is created when private endpoint is enabled. To access
workstations in the workstation cluster, configure access to the managed
service using [Private Service
Connect](https://cloud.google.com/vpc/docs/configure-private-service-connect-services).
</pre>

<code>string service_attachment_uri = 3 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>

@return The serviceAttachmentUri.
java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/WorkstationCluster.java