hidden_method (Mocha::ClassMethod)

        # File lib/mocha/class_method.rb, line 62
    62:     def hidden_method
    63:       if RUBY_VERSION < '1.9'
    64:         method_name = method.to_s.gsub(/\W/) { |s| "_substituted_character_#{s[0]}_" }
    65:       else
    66:         method_name = method.to_s.gsub(/\W/) { |s| "_substituted_character_#{s.ord}_" }
    67:       end
    68:       hidden_method = "__stubba__#{method_name}__stubba__"
    69:       RUBY_VERSION < '1.9' ? hidden_method.to_s : hidden_method.to_sym
    70:     end