Add DOMAIN-ITEMS -- cache source form of the items. Makes them easier to transfer to another domain.
Add METHOD-DEFINITION-KEYWORDS -- Replace constant with generic function to allow developers of new domain classes to add new keywords to the set of allowable keywords.
Add DOMAIN-ITEMS -- cache source form of the items. Makes them easier to transfer to another domain. Add METHOD-DEFINITION-KEYWORDS -- Replace constant with generic function to allow developers of new domain classes to add new keywords to the set of allowable keywords.