syncRequestValue ::= SEQUENCE {
          mode ENUMERATED {
              -- 0 unused
              refreshOnly       (1),
              -- 2 reserved
              refreshAndPersist (3)
          },
          cookie     syncCookie OPTIONAL,
          reloadHint BOOLEAN DEFAULT FALSE
      }

   The syncCookie is a notational convenience to indicate that, while
   the syncCookie type is encoded as an OCTET STRING, its value is an
   opaque value containing information about the synchronization session
   and its state.  Generally, the session information would include a
   hash of the operation parameters that the server requires not be
   changed and the synchronization state information would include a
   commit (log) sequence number, a change sequence number, or a time
   stamp.  For convenience of description, the term "no cookie" refers
   either to a null cookie or to a cookie with pre-initialized
   synchronization state.

      syncCookie ::= OCTET STRING

mode
cookie
reloadHint

mode
reloadHint

mode