lib/Elastica/QueryBuilder/DSL/Query.php
public function wildcard(string $key = '', string $value = null, float $boost = 1.0): Wildcard
    {
        return new Wildcard($key, $value, $boost);
    }
public function wildcard(string $key = '', string $value = null, float $boost = 1.0): Wildcard
    {
        return new Wildcard($key, $value, $boost);
    }
public function wildcard ( string $ key = '' , string $ value = null , float $ boost = 1.0 ) : Wildcard { return new Wildcard ( $ key , $ value , $ boost ) ; }
wildcard query.

@see https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-wildcard-query.html

@param string $key   OPTIONAL Wildcard key
@param string $value OPTIONAL Wildcard value
@param float  $boost OPTIONAL Boost value (default = 1)

@return Wildcard
wildcard query .