# File lib/rgen/util/model_comparator_base.rb, line 15
                def compare_spec(clazz, hash)
                        @compareSpecs ||= {}
                        raise "Compare spec already defined for #{clazz}" if @compareSpecs[clazz]
                        spec = CompareSpec.new
                        hash.each_pair do |k,v|
                                spec.send("#{k}=",v)
                        end
                        @compareSpecs[clazz] = spec
                end