@Override
    public String toString() {
        return "User{" +
               "id=" + id +
               ", version=" + version +
               ", createTimeMs=" + createTimeMs +
               ", createUser='" + createUser + '\'' +
               ", updateTimeMs=" + updateTimeMs +
               ", updateUser='" + updateUser + '\'' +
               ", name='" + subjectId + '\'' +
               ", uuid='" + uuid + '\'' +
               ", displayName='" + displayName + '\'' +
               ", fullName='" + fullName + '\'' +
               ", group=" + group +
               '}';
    }
@return "Group" or "User" depending on type.
stroom-core-shared/src/main/java/stroom/security/shared/User.java