GenericApiGatewayClient class is using depricated methods

[krishna141]

Hi Buddy

GenericApiGatewayClient class is using 4 deprecated methods mentioned below.
Could You please help to update the code to remove these deprecated methods.

setRegion(region);
setEndpoint(endpoint);
setSigner(signer);
.execute(request, responseHandler, errorResponseHandler, executionContext).getAwsResponse();

[rpgreen]

Thanks, I am aware of this. Some internal APIs are needed in order to override the appropriate behaviour. If you can find a better way please send a PR.

[zoranpolic]

I tried to create a PR, but it wouldn't let me. I forked your repository and replaced deprecated methods with commit 1ef94b4