src/Guzzle/Plugin/OAuth2Plugin.php
public function setCache($file)
	{
		if ( ! empty($file)) {
			$this->cache = new AccessTokenCache($file);

			$this->setAccessToken($this->cache->get());
		}
	}
public function setCache($file)
	{
		if ( ! empty($file)) {
			$this->cache = new AccessTokenCache($file);

			$this->setAccessToken($this->cache->get());
		}
	}
public function setCache ( $ file ) { if ( ! empty ( $ file ) ) { $ this -> cache = new AccessTokenCache ( $ file ) ; $ this -> setAccessToken ( $ this -> cache -> get ( ) ) ; } }
sets the cache file when possible

@param string $file
sets the cache file when possible