@Override
 public String toString() {
   return token.toString();
 }
 /**
  * Specified the last by sequence number that has been seen by the consumer.
  *
  * @return the stream last sequence number.
  */
 public long sequenceNumber() {
   return token.sequenceNumber();
 }
 /**
  * The partition number (vBucket), to which this state belongs.
  *
  * @return the stream partition number.
  */
 public short partition() {
   return (short) token.vbucketID();
 }
 /**
  * A unique identifier that is generated that is assigned to each VBucket. This number is
  * generated on an unclean shutdown or when a VBucket becomes active.
  *
  * @return the stream vbucketUUID.
  */
 public long vbucketUUID() {
   return token.vbucketUUID();
 }