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: append.go
    path of file: ./repos/goldfish/vendor/github.com/hashicorp/go-multierror
    
    the code of the file until where you have to start completion: package multierror

// Append is a helper function that will append more errors
// onto an Error in order to create a larger multi-error.
//
// If err is not a multierror.Error, then it will be turned into
// one. If any of the errs are multierr.Error, they will be flattened
// one level into err.
func Append(err error, errs ...error) *Error {
	switch err := err.(type) {
	case *Error:
		// Typed nils can reach here, so initialize if we are nil
		if err == nil {
			err = new(Error)
		}

		// Go through each error and flat
    
func Append(err error, errs ...error) *Error {
	switch err := err.(type) {
	case *Error:
		// Typed nils can reach here, so initialize if we are nil
		if err == nil {
			err = new(Error)
		}

		// Go through each error and flatten
		for _, e := range errs {
			switch e := e.(type) {
			case *Error:
				if e != nil {
					err.Errors = append(err.Errors, e.Errors...)
				}
			default:
				if e != nil {
					err.Errors = append(err.Errors, e)
				}
			}
		}

		return err
	default:
		newErrs := make([]error, 0, len(errs)+1)
		if err != nil {
			newErrs = append(newErrs, err)
		}
		newErrs = append(newErrs, errs...)

		return Append(&Error{}, newErrs...)
	}
}