/**
* match query
*
* @link http://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-match-query.html
* @param null|string $field
* @param null|string $value
* @return Match
*/
public function match($field = null, $value = null)
{
if ($field !== null && $value !== null) {
$match = new Match();
$match->setParam($field, $value);
return $match;
}
return new Match();
}
