# File lib/mocha/argument_iterator.rb, line 9
 9:     def each(&block)
10:       if @argument.is_a?(Hash) then
11:         @argument.each do |method_name, return_value|
12:           block.call(method_name, return_value)
13:         end
14:       else
15:         block.call(@argument)
16:       end
17:     end