exceptionUnmarshallers.add(new InvalidParameterExceptionUnmarshaller());
exceptionUnmarshallers.add(new StandardErrorUnmarshaller());
setEndpoint("sns.us-east-1.amazonaws.com");
requestHandlers = new HandlerChainFactory().newRequestHandlerChain(
"/com/amazonaws/services/sns/request.handlers");
client = new HttpClient(clientConfiguration);
}