original_string: public function dropIndex($collection, $indexName, array $options = [])
      {
          $col = $this->db->selectCollection($collection);
  
          return $col->dropIndex($indexName, $options);
      }
code: public function dropIndex($collection, $indexName, array $options = [])
      {
          $col = $this->db->selectCollection($collection);
  
          return $col->dropIndex($indexName, $options);
      }
code_tokens: public function dropIndex ( $ collection , $ indexName , array $ options = [ ] ) { $ col = $ this -> db -> selectCollection ( $ collection ) ; return $ col -> dropIndex ( $ indexName , $ options ) ; }
docstring: Drop a index.
  
  @param $collection
  @param $indexName
  @param array $options
  @return array|object
docstring_tokens: Drop a index .