shell> curl -X PUT --header 'If-Match: "_XG3z-l---B"' --data-binary @- --dump - http://localhost:8529/_api/document/products/10755 <<EOF
{"other":"content"}
EOF
HTTP/1.1 412 Precondition Failed
x-content-type-options: nosniff
content-type: application/json; charset=utf-8
etag: "_XG3z-l---_"
{
"error" : true,
"code" : 412,
"errorNum" : 1200,
"errorMessage" : "precondition failed",
"_id" : "products/10755",
"_key" : "10755",
"_rev" : "_XG3z-l---_"
}