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