Elastica\Query::setPostFilter PHP Method

    public function setPostFilter(AbstractQuery $filter)
    {
        return $this->setParam('post_filter', $filter);
    }

 /**
  * @group functional
  */
 public function testIndicesQuery()
 {
     $docs = array(new Document(1, array('color' => 'blue')), new Document(2, array('color' => 'green')), new Document(3, array('color' => 'blue')), new Document(4, array('color' => 'yellow')));
     $index1 = $this->_createIndex();
     $index1->addAlias('indices_query');
     $index1->getType('test')->addDocuments($docs);
     $index1->refresh();
     $index2 = $this->_createIndex();
     $index2->addAlias('indices_query');
     $index2->getType('test')->addDocuments($docs);
     $index2->refresh();
     $boolQuery = new Query\BoolQuery();
     $boolQuery->addMustNot(new Term(array('color' => 'blue')));
     $indicesQuery = new Indices($boolQuery, array($index1->getName()));
     $boolQuery = new Query\BoolQuery();
     $boolQuery->addMustNot(new Term(array('color' => 'yellow')));
     $indicesQuery->setNoMatchQuery($boolQuery);
     $query = new Query();
     $query->setPostFilter($indicesQuery);
     // search over the alias
     $index = $this->_getClient()->getIndex('indices_query');
     $results = $index->search($query);
     // ensure that the proper docs have been filtered out for each index
     $this->assertEquals(5, $results->count());
     foreach ($results->getResults() as $result) {
         $data = $result->getData();
         $color = $data['color'];
         if ($result->getIndex() === $index1->getName()) {
             $this->assertNotEquals('blue', $color);
         } else {
             $this->assertNotEquals('yellow', $color);
         }
     }
 }