public void setMemberEntities(Set<MemberEntity> memberEntities) {
    this.memberEntities = memberEntities;
  }
Sets the version number of the relevant data stored in the database.
<p>
This is used to help ensure that collisions updatin the relevant data in the database are
handled properly via Optimistic locking.  It is recommended that this value is <b>not</b>
manually updated, else issues may occur when persisting the data.

@param version a version number
ambari-server/src/main/java/org/apache/ambari/server/orm/entities/UserEntity.java