public function refreshAccessToken()
	{
		$newToken = $this->http->requestAccessToken();
		if (!is_null($newToken))
		{
			$this->config->setAccessToken($newToken);
			$this->http = new Request($this->guzzle, $this->config, $this->climate);
			if ($this->config->shouldStoreToken())
			{
				file_put_contents(Helper::getStoragePath($this->config->getStorageTokenFilename()), $newToken);
			}
		}

		return $newToken;
	}