public UpdateRecordsRequest withClientContext(String clientContext) {
        setClientContext(clientContext);
        return this;
    }
Intended to supply a device ID that will populate the lastModifiedBy field referenced in other methods. The
ClientContext field is not yet implemented.

@param clientContext
       Intended to supply a device ID that will populate the lastModifiedBy field referenced in other methods.
       The ClientContext field is not yet implemented.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cognitosync/src/main/java/com/amazonaws/services/cognitosync/model/UpdateRecordsRequest.java