code/libraries/joomlatools/library/http/response/response.php
public function isStale()
    {
        $result = true;
        if ($maxAge = $this->getMaxAge()) {
            $result = ($maxAge - $this->getAge()) <= 0;
        }

        return $result;
    }
public function isStale()
    {
        $result = true;
        if ($maxAge = $this->getMaxAge()) {
            $result = ($maxAge - $this->getAge()) <= 0;
        }

        return $result;
    }
public function isStale ( ) { $ result = true ; if ( $ maxAge = $ this -> getMaxAge ( ) ) { $ result = ( $ maxAge - $ this -> getAge ( ) ) <= 0 ; } return $ result ; }
Returns true if the response is "stale".

When the responses is stale, the response may not be served from cache without first re-validating with
the origin.

@return Boolean true if the response is stale, false otherwise
Returns true if the response is stale .