code: def method_missing(method_name, *arguments, &block)
        if /^(.+)_server$/ =~ method_name.to_s
          @servers.fetch($1.to_sym, nil)
        elsif /^(.+)_server\?$/ =~ method_name.to_s
          @servers.has_key?($1.to_sym)
        else
          super
        end
      end
docs: Grab object from {@servers} hash or check if it exists
   @param method_name the method name called
   @param arguments the arguments to the call
   @param block an optional block for the call