original_string: public function get_session($attr = null){
      if ( $this->session->has(self::$un) ){
        return $attr ? $this->session->get(self::$un, $attr) : $this->session->get(self::$un);
      }
    }
code: public function get_session($attr = null){
      if ( $this->session->has(self::$un) ){
        return $attr ? $this->session->get(self::$un, $attr) : $this->session->get(self::$un);
      }
    }
code_tokens: public function get_session ( $ attr = null ) { if ( $ this -> session -> has ( self :: $ un ) ) { return $ attr ? $ this -> session -> get ( self :: $ un , $ attr ) : $ this -> session -> get ( self :: $ un ) ; } }
docstring: Returns session property from the session's user array.
  
  @param null|string The property to get
  @return mixed
docstring_tokens: Returns session property from the session s user array .