.An array of doc locations. Useful for getting documents from different indices.
[source,js]
---------
client.mget({
  body: {
    docs: [
      { _index: 'indexA', _type: 'typeA', _id: '1' },
      { _index: 'indexB', _type: 'typeB', _id: '1' },
      { _index: 'indexC', _type: 'typeC', _id: '1' }
    ]
  }
}, function(error, response){
  // ...
});
---------

.An array of ids. You must also specify the `index` and `type` that apply to all of the ids.
[source,js]
---------
client.mget({
  index: 'myindex',
  type: 'mytype',
  body: {
    ids: [1, 2, 3]
  }
}, function(error, response){
  // ...
});
---------