from() public method
Sets the index and type to retrieve documents from. See also http://www.elastic.co/guide/en/elasticsearch/reference/current/search-search.html#search-multi-index-type.
public $this from ( $index, $type = null )$index
string|array
The index to retrieve data from. This can be a string representing a single index or a an array of multiple indexes. If this is null it means that all indexes are being queried. $type
string|array
The type to retrieve data from. This c