Invokes dg with the original key and a reference to the parameter value for key if key is one of parameter keys passed on instantiation or added by a subclass.
parameter key (case insensitive)
callback delegate
true if key is one of the parameter keys passed on instantiation or added by a subclass or false otherwise. In case of false dg was not invoked.
See Implementation
Invokes dg with the original key and a reference to the parameter value for key if key is one of parameter keys passed on instantiation or added by a subclass.