Making $param_set an active binding, mostly so that it can be an active binding in subclasses. This is necessary for Filters that are composites from other things, where the $param_set should be a ParamSetCollection, which must be reconstructed after cloning.
Making
$param_setan active binding, mostly so that it can be an active binding in subclasses. This is necessary forFilters that are composites from other things, where the$param_setshould be aParamSetCollection, which must be reconstructed after cloning.