hidden_method (Mocha::ClassMethod)

        # File lib/mocha/class_method.rb, line 56
    56:     def hidden_method
    57:       if RUBY_VERSION < '1.9'
    58:         method_name = method.to_s.gsub(/\W/) { |s| "_substituted_character_#{s[0]}_" }
    59:       else
    60:         method_name = method.to_s.gsub(/\W/) { |s| "_substituted_character_#{s.ord}_" }
    61:       end
    62:       "__stubba__#{method_name}__stubba__"
    63:     end