kind=defined
names=sort,uid_sort
visibility=public

--- sort(sort_keys, search_keys, charset)
--- uid_sort(sort_keys, search_keys, charset)

Sends a SORT command to sort messages in the mailbox.

ex).

  p imap.sort(["FROM"], ["ALL"], "US-ASCII")
  #=> [1, 2, 3, 5, 6, 7, 8, 4, 9]
  p imap.sort(["DATE"], ["SUBJECT", "hello"], "US-ASCII")
  #=> [6, 7, 8, 1]

