title: Rest API for enabling advanced filtering in couchbase XDCR
body: <p>From Documentation, we can see REST API available only for enable XDCR.
  Do we have REST for Enable advanced filtering like Filter Expression in XDCR?</p>
  
  <p>Please let me know where can i find REST API for 
  Enable advanced filtering like Filter Expression in couchbase XDCR configuration.
  Current couchbase version is 6.0.0 EE.</p>