code: @Override
      public GetFunctionResult getFunction(GetFunctionRequest request) {
          request = beforeClientExecution(request);
          return executeGetFunction(request);
      }
docs: <p>
  Get a <code>Function</code>.
  </p>
  
  @param getFunctionRequest
  @return Result of the GetFunction operation returned by the service.
  @throws ConcurrentModificationException
  Another modification is in progress at this time and it must complete before you can make your change.
  @throws NotFoundException
  The resource specified in the request was not found. Check the resource, and then try again.
  @throws UnauthorizedException
  You are not authorized to perform this operation.
  @sample AWSAppSync.GetFunction
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/appsync-2017-07-25/GetFunction" target="_top">AWS API
  Documentation</a>