docs: public void link(Object source, CollectionDescriptor cds, Object referenceToLink)
      {
          if(cds.isMtoNRelation())
          {
              m_broker.addMtoNImplementor(new MtoNImplementor(cds, source, referenceToLink));
          }
          else
          {
              ClassDescriptor cld = m_broker.getClassDescriptor(referenceToLink.getClass());
              m_broker.link(referenceToLink, cld, cds, source, false);
          }
      }