@Deprecated public GroupDataBody findGroupDataBody() { final GroupBody body = getBody(); if ( body instanceof GroupDataBody ) { return (GroupDataBody) body; } if ( body instanceof SubGroupBody ) { final SubGroupBody groupBody = (SubGroupBody) body; final Group group = groupBody.getGroup(); if ( group instanceof RelationalGroup ) { final RelationalGroup rg = (RelationalGroup) group; return rg.findGroupDataBody(); } } return null; }