def protocol_array
      a = [ keyword ]
      if not args.empty? then
        a << ' '
        a << args.join(' ')
      end
      a << CRLF
    end
def protocol_array
      a = [ keyword ]
      if not args.empty? then
        a << ' '
        a << args.join(' ')
      end
      a << CRLF
    end
Internal: create the array that will be used to generate the protocol
 string

 Returns Array