This control is included in the searchRequest and searchResultDone
   messages as part of the controls field of the LDAPMessage, as defined
   in Section 4.1.12 of [LDAPv3]. The structure of this control is as
   follows:

pagedResultsControl ::= SEQUENCE {
        controlType     1.2.840.113556.1.4.319,
        criticality     BOOLEAN DEFAULT FALSE,
        controlValue    searchControlValue
}

The searchControlValue is an OCTET STRING wrapping the BER-encoded
version of the following SEQUENCE:

realSearchControlValue ::= SEQUENCE {
        size            INTEGER (0..maxInt),
                                -- requested page size from client
                                -- result set size estimate from server
        cookie          OCTET STRING
}

   -- Client sends a search request asking for paged results
   -- with a page size of 3.
   C: SearchRequest + pagedResultsControl(3,"")
   -- Server responds with three entries plus an indication
   -- of 5 total entries in the search result and an opaque
   -- cooking to be used by the client when retrieving subsequent
   -- pages.
   S: SearchResultEntry
   S: SearchResultEntry
   S: SearchResultEntry
   S: SearchResultDone + pagedResultsControl(5, "opaque")
   -- Client sends an identical search request (except for
   -- message id), returning the opaque cooking, asking for
   -- the next page.
   C: SearchRequest + PagedResultsControl(3, "opaque")
   -- Server responds with two entries plus an indication
   -- that there are no more entries (null cookie).
   S: SearchResultEntry
   S: SearchResultEntry
   S: SearchResultDone + pagedResultsControl(5,"")