1.9.17 Behavior: pluggable behavior (not yet implemented)

debuggerClass

Answer which class is to be used to debug a chain of contexts which includes the receiver. nil means ’do not debug’; other classes are sent #debuggingPriority and the one with the highest priority is picked.

decompilerClass

Answer the class that can be used to decompile methods, or nil if there is none (as is the case now).

evaluatorClass

Answer the class that can be used to evaluate doits, or nil if there is none (as is the case now).

parserClass

Answer the class that can be used to parse methods, or nil if there is none (as is the case now).