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: server-side.go
    path of file: ./repos/corteza/server/vendor/github.com/minio/minio-go/v6/pkg/encrypt
    
    the code of the file until where you have to start completion: /*
 * MinIO Go Library for Amazon S3 C
    
func SSE(sse ServerSide) ServerSide {
	if sse == nil || sse.Type() != SSEC {
		return sse
	}
	if sse, ok := sse.(ssecCopy); ok {
		return ssec(sse)
	}
	return sse
}