original_string: public function retrieve_query(string $hash): ?array
    {
      if ( isset($this->queries[$hash]) ){
        if ( \is_string($this->queries[$hash]) ){
          $hash = $this->queries[$hash];
        }
        return $this->queries[$hash];
      }
      return null;
    }
code: public function retrieve_query(string $hash): ?array
    {
      if ( isset($this->queries[$hash]) ){
        if ( \is_string($this->queries[$hash]) ){
          $hash = $this->queries[$hash];
        }
        return $this->queries[$hash];
      }
      return null;
    }
code_tokens: public function retrieve_query ( string $ hash ) : ? array { if ( isset ( $ this -> queries [ $ hash ] ) ) { if ( \ is_string ( $ this -> queries [ $ hash ] ) ) { $ hash = $ this -> queries [ $ hash ] ; } return $ this -> queries [ $ hash ] ; } return null ; }
docstring: Retrieves a query array based on its hash.
  @param string $hash
  @return array|null
docstring_tokens: Retrieves a query array based on its hash .