Is this how I modify Properties with ParamSpecs?

param_spec.vala

    public override (unowned ParamSpec)[] list_properties() {
        Type type = typeof (TdLibParameters);
        ObjectClass ocl = (ObjectClass) type.class_ref();

        Gee.ArrayList<ParamSpec> converted_params = new Gee.ArrayList<ParamSpec>();

        foreach (ParamSpec spec in ocl.list_properties()) {
            string converted_name = spec.get_name().replace("-", "_");
            switch(spec.value_type) {
                case Type.BOOLEAN:
                    ParamSpec converted_spec = new ParamSpecBoolean(
                        converted_name, 
                        converted_name, 
                        converted_name, 
                        (bool) spec.get_default_value(), 
                        GLib.ParamFlags.READWRITE
                    );
                    converted_params.add(converted_spec);
                    break;
                case Type.STRING:
                    ParamSpec converted_spec = new ParamSpecString(
                        converted_name, 
                        converted_name, 
                        converted_name, 
                        (string) spec.get_default_value(), 
                        GLib.ParamFlags.READWRITE
                    );
                    converted_params.add(converted_spec);
                    break;
                default:
                    break;
            }
        }
        return converted_params.to_array();
    }