New map helper method

I've added a new helper method to Map called get(key, default) which 
takes a default value which is added to the map if the key does not 
already exist.

So you can swap code like this

      classmethods = classmap.classmethods;
       if (classmethods == null) {
	classmethods = [];
	classmap.classmethods = classmethods;
       }
       classmethods.add(method);

with

     classmap.get("classmethods", []).add(method)

the nice thing about this approach is it works for any type of entry, 
be it a list, map, bean, whatever. The downside is it creates the 
default value each time the method is called.

James
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http://radio.weblogs.com/0112098/