# File lib/puppet/external/event-loop/better-definers.rb, line 130
130:     def define_opposite_readers (name_pairs)
131:         name_pairs.collect! { |k, v| [k.to_sym, v.to_sym] }
132:         for opposite_name, name in name_pairs do
133:             define_reader(name) unless method_defined? name
134:             class_eval %{def #{opposite_name} ; not #{name} end}
135:         end
136:     end