code: public Vector<Object> getSpecificationHierarchy(Vector<Object> repositoryParams, Vector<Object> sutParams)
      {
          try
          {
  			Repository repository = loadRepository( repositoryParams );
  			SystemUnderTest systemUnderTest = XmlRpcDataMarshaller.toSystemUnderTest( sutParams );
  
              DocumentNode hierarchy = service.getSpecificationHierarchy( repository,  systemUnderTest );
  
              return hierarchy.marshallize();
          }
          catch (Exception e)
          {
              return errorAsVector( e, SPECIFICATIONS_NOT_FOUND );
          }
      }
docs: {@inheritDoc}