$_params
$_params : array
Params.
Script filter.
This function can be used to handle params for queries, filter
$_query : array|\Elastica\Query\AbstractQuery
Query object.
__construct(array|string|\Elastica\Script\AbstractScript  $script = null) 
                Construct script filter.
| array|string|\Elastica\Script\AbstractScript | $script | OPTIONAL Script | 
setScript(\Elastica\Script\Script|string|array  $script) : $this
                Sets script object.
| \Elastica\Script\Script|string|array | $script |