code: @Override
      public java.util.concurrent.Future<DescribeKeyPairsResult> describeKeyPairsAsync(
              com.amazonaws.handlers.AsyncHandler<DescribeKeyPairsRequest, DescribeKeyPairsResult> asyncHandler) {
  
          return describeKeyPairsAsync(new DescribeKeyPairsRequest(), asyncHandler);
      }
docs: Simplified method form for invoking the DescribeKeyPairs operation with an AsyncHandler.
  
  @see #describeKeyPairsAsync(DescribeKeyPairsRequest, com.amazonaws.handlers.AsyncHandler)