@java.lang.Override
    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
      return super.setUnknownFields(unknownFields);
    }
<pre>
Optional. If set, the request will be rejected if the latest version of the
workstation on the server does not have this ETag.
</pre>

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

@param value The bytes for etag to set.
@return This builder for chaining.
java-workstations/proto-google-cloud-workstations-v1/src/main/java/com/google/cloud/workstations/v1/StopWorkstationRequest.java