Net::IMAP::TaggedResponse represents tagged responses.

The server completion result response indicates the success or
failure of the operation.  It is tagged with the same tag as the
client command which began the operation.

  response_tagged ::= tag SPACE resp_cond_state CRLF
  
  tag             ::= 1*<any ATOM_CHAR except "+">
  
  resp_cond_state ::= ("OK" / "NO" / "BAD") SPACE resp_text