/**
  * Test whether there is a relation of a given type between two responsibilities. In case the
  * relation exists, it is returned by the method
  *
  * @param resp1 The source responsibility
  * @param resp2 The target responsibility
  * @param relationTypeVO The relation type (VO class name)
  */
 public ArchERelation getRelation(
     ArchEResponsibility resp1, ArchEResponsibility resp2, String relationTypeVO) {
   List<ArchERelation> list = this.getRelations(relationTypeVO);
   ArchERelation rel = null;
   for (Iterator<ArchERelation> it = list.iterator(); it.hasNext(); ) {
     rel = it.next(); // TODO: Check if an equal 'by name' is needed below
     ArchEResponsibility parent = (ArchEResponsibility) rel.getParent();
     ArchEResponsibility child = (ArchEResponsibility) rel.getChild();
     if ((parent != null) && (child != null) && parent.equals(resp1) && child.equals(resp2))
       return (rel);
     if ((parent != null) && (child != null) && parent.equals(resp2) && child.equals(resp1))
       return (rel);
   }
   return (null);
 }
 public ArchERelation getRelation(ArchEScenario sc, ArchEResponsibility resp) {
   List<ArchERelation> list = this.getRelations(ArchETranslationRelationVO.class.getName());
   ArchERelation rel = null;
   for (Iterator<ArchERelation> it = list.iterator(); it.hasNext(); ) {
     rel = it.next(); // TODO: Check if an equal 'by name' is needed below
     ArchEScenario parent = (ArchEScenario) rel.getParent();
     ArchEResponsibility child = (ArchEResponsibility) rel.getChild();
     if ((parent != null) && (child != null) && parent.equals(sc) && child.equals(resp))
       return (rel);
   }
   return (null);
 }
  /**
   * Test if a given responsibility has been refined
   *
   * @param responsibility The parent responsibility
   */
  public boolean isLeaf(ArchEResponsibility responsibility) {
    ArchERefinementRelationVO item = null;
    for (Iterator<ArchERefinementRelationVO> it = refVOs.iterator(); it.hasNext(); ) {
      item = it.next();
      // TODO: Check if an equal 'by name' works better here
      ArchEResponsibility parent = item.getParent();
      if ((parent != null) && parent.equals(responsibility) && item.getChild() != null)
        return (false);
    }

    return (true);
  }
  /**
   * Return the refinements (children responsibilities) of a given responsibility
   *
   * @param parentResponsibility The parent responsibility
   */
  public List<ArchEResponsibility> getChildrenResponsibilities(
      ArchEResponsibility parentResponsibility) {
    List<ArchEResponsibility> children = new ArrayList<ArchEResponsibility>();

    ArchERefinementRelationVO item = null;
    for (Iterator<ArchERefinementRelationVO> it = refVOs.iterator(); it.hasNext(); ) {
      item = it.next();
      // TODO: Check if an equal 'by name' works better here
      ArchEResponsibility parent = item.getParent();
      if ((parent != null) && parent.equals(parentResponsibility) && item.getChild() != null)
        children.add(item.getChild());
    }
    return (children);
  }