original_string: function devoid($key) {
  		$val=$this->ref($key,FALSE);
  		return empty($val) &&
  			(!Cache::instance()->exists($this->hash($key).'.var',$val) ||
  				!$val);
  	}
code: function devoid($key) {
  		$val=$this->ref($key,FALSE);
  		return empty($val) &&
  			(!Cache::instance()->exists($this->hash($key).'.var',$val) ||
  				!$val);
  	}
code_tokens: function devoid ( $ key ) { $ val = $ this -> ref ( $ key , FALSE ) ; return empty ( $ val ) && ( ! Cache :: instance ( ) -> exists ( $ this -> hash ( $ key ) . '.var' , $ val ) || ! $ val ) ; }
docstring: Return TRUE if hive key is empty and not cached
  @return bool
  @param $key string
docstring_tokens: Return TRUE if hive key is empty and not cached