code: public PlatformResponse disconnect(String consumerKey, String consumerSecret,
  			String accessToken, String accessTokenSecret)
  			throws ConnectionException {
  		httpClient = new PlatformHttpClient(consumerKey, consumerSecret,
  				accessToken, accessTokenSecret);
  		return this.httpClient.disconnect();
  	}
docs: Disconnects the user from quickbooks
  
  @throws ConnectionException