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