if (modelElement instanceof AssignedConstraintsSet)
page = new ConstraintFormPage(this, pageID, defaultPageName,
modelElement);
else if (modelElement instanceof QueryResultSet)
page = new GSSQueryResultModelElementFormPage(this, pageID,
defaultPageName, modelElement);
else if (modelElement instanceof GSS)
page = new GSSModelElementFormPage(this, pageID,
defaultPageName, modelElement);