You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: error.go
    path of file: ./repos/cockroach/pkg/util/errorutil
    
    the code of the file until where you have to start completion: // Copyright 2017 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change Date specified in that file, in accordance with
// the Busi
    
func UnexpectedWithIssueErrorf(issue int, format string, args ...interface{}) error {
	err := errors.Newf(format, args...)
	err = errors.Wrap(err, "unexpected error")
	err = errors.WithSafeDetails(err, "issue #%d", errors.Safe(issue))
	err = errors.WithHint(err,
		fmt.Sprintf("We've been trying to track this particular issue down. "+
			"Please report your reproduction at "+
			"https://github.com/cockroachdb/cockroach/issues/%d "+
			"unless that issue seems to have been resolved "+
			"(in which case you might want to update crdb to a newer version).",
			issue))
	return err
}