title: Want to get object of reference collection by _id in mongodb node.JS
body: <p>I want to get all detail of particular record by reference id collection.</p>
  
  <pre><code>{
  "_id" : ObjectId("586c8bf63ef8480af89e94ca"),
  "createdDate" : ISODate("2017-01-04T05:45:26.945Z"),
  "branch" : {
      "$ref" : "branchmst",
      "$id" : "5864ac80fa769f09a4881791",
      "$db" : "eviral"
      },
  "__v" : 0
  }
  </code></pre>
  
  <p>This is my collection record. I need to all detail from "branchmst" collection where "_id" is "5864ac80fa769f09a4881791".</p>