Cake\ElasticSearch\FilterBuilder::missing PHP Method

Returns a Missing filter object setup to filter documents not having a property present or not null.

See also: http://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-exists-filter.html

public missing ( string $field = '' ) : Elastica\Filter\Missing
$field	string	The field to check for existance.
return	Elastica\Filter\Missing

    public function missing($field = '')
    {
        return new Filter\Missing($field);
    }

FilterBuilder