docs: public void setCascadingDelete(Class target, boolean doCascade)
      {
          ClassDescriptor cld = getBroker().getClassDescriptor(target);
          List extents = cld.getExtentClasses();
          Boolean result = doCascade ? Boolean.TRUE : Boolean.FALSE;
          setCascadingDelete(cld, result);
          if(extents != null && extents.size() > 0)
          {
              for(int i = 0; i < extents.size(); i++)
              {
                  Class extent =  (Class) extents.get(i);
                  ClassDescriptor tmp = getBroker().getClassDescriptor(extent);
                  setCascadingDelete(tmp, result);
              }
          }
      }