this.xml.put(exPadding);
  private void _writeMembership(Membership membership, String padding)     throws  GroupNotFoundException,            IOException,            MemberNotFoundException,            SubjectNotFoundException  {    boolean isImmediate = true;    // How do composites fit in here?    if (membership.getMship_type().equals(MembershipType.E)) {      isImmediate = false;    }    String exPadding = padding + "  ";    this.xml.put(padding);    this.xml.puts("<membership>");    this.xml.put(exPadding);    this.xml.puts("<depth>" + membership.getDepth() + "</depth>");    this.xml.put(exPadding);    this.xml.puts("<listName>" + membership.getList().getName() + "</listName>");    this.xml.put(exPadding);    this.xml.puts("<immediate>" + isImmediate + "</immediate>");    _writeGroupRef(membership.getGroup(), exPadding, true);    this._writeSubject(membership.getMember().getSubject(), exPadding);    this.xml.put(padding);    this.xml.puts("</membership>");  } // private void _writeMembership(membership, padding)