specify how the batch api is used with Rest API endpoints

{
    "entity-type": "document",
    "repository": "default",
    "uid": "531d9636-46c2-497d-996b-1ae7a8f43e89",
    "path": "/default-domain",
    "type": "Domain",
    "state": "project",
    "versionLabel": "",
    "title": "Default domain",
    "lastModified": "2013-09-06T08:53:10.00Z",
    "properties": {
        "file:content": { 
             "upload-batch":"batchId-20358",
             "upload-fileId":"0"
         }
     },
    "facets": [
        "SuperSpace",
        "Folderish"
    ],
    "changeToken": "1378457590000",
    "contextParameters": {}
}