public HeldLocksToken refresh(long expirationDateMs){
  return new HeldLocksToken(tokenId,client,creationDateMs,expirationDateMs,lockMap,lockTimeout,versionId);
}

public HeldLocksToken refresh ( long expirationDateMs ) { return new HeldLocksToken ( tokenId , client , creationDateMs , expirationDateMs , lockMap , lockTimeout , versionId ) ; }
this should only be created by the lock service . this call will not actually refresh the token .
