shell> curl -X PUT --header 'If-Match: "2229753244"' --data-binary @- --dump - http://localhost:8529/_api/document/products/2229425564?policy=last <<EOF
{}
EOF

HTTP/1.1 202 Accepted
content-type: application/json; charset=utf-8
etag: "2230015388"
location: /_db/_system/_api/document/products/2229425564

{ 
  "error" : false, 
  "_id" : "products/2229425564", 
  "_rev" : "2230015388", 
  "_key" : "2229425564" 
}