# File lib/mail/parsers/rfc2822.rb, line 117
    def _nt_CRLF
      start_index = index
      if node_cache[:CRLF].has_key?(index)
        cached = node_cache[:CRLF][index]
        @index = cached.interval.end if cached
        return cached
      end

      if has_terminal?("\r\n", false, index)
        r0 = instantiate_node(SyntaxNode,input, index...(index + 2))
        @index += 2
      else
        terminal_parse_failure("\r\n")
        r0 = nil
      end

      node_cache[:CRLF][start_index] = r0

      r0
    end