title: How to add subdocument to an ElasticSearch index
body: <p>In ElasticSearch, given the following document, Is it possible to add items to the "Lists" sub-document without passing the parent attributes (i.e. Message and tags)?
  I have several attributes in the parent document which I dont want to pass every time I want to add one item to the sub-document.</p>
  
  <pre><code>{
  "tweet" : {
      "message" : "some arrays in this tweet...",
      "tags" : ["elasticsearch", "wow"],
      "lists" : [
          {
              "name" : "prog_list",
              "description" : "programming list"
          },
          {
              "name" : "cool_list",
              "description" : "cool stuff list"
          }
      ]
  }
  </code></pre>
  
  <p>}</p>