hidden_method (Mocha::ClassMethod)

        # File lib/mocha/class_method.rb, line 44
    44:     def hidden_method
    45:       if RUBY_VERSION < '1.9'
    46:         method_name = method.to_s.gsub(/\W/) { |s| "_substituted_character_#{s[0]}_" }
    47:       else
    48:         method_name = method.to_s.gsub(/\W/) { |s| "_substituted_character_#{s.ord}_" }
    49:       end
    50:       "__stubba__#{method_name}__stubba__"
    51:     end