throw new RuntimeException("Member.getSubject() not implemented");
try { this.subj = this.getMember_id().getSubject(); } catch (SubjectNotFoundException eSNF) { throw new RuntimeException("invalid session: subject not found"); }
  public Subject  getSubject() {    // DESIGN What exception?    // TODO What exception?    if (this.subj == null) {      throw new RuntimeException("Member.getSubject() not implemented");    }    return this.subj;  }