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: topk.go
    path of file: ./repos/cockroach/pkg/util
    
    the code of the file until where you have to start completion: // Copyright 2016 The Cockroach Authors.
//
// Use 
    
func MoveTopKToFront(data sort.Interface, k int) {
	if data.Len() <= k {
		return
	}
	// We want the call to be deterministic so we use a predictable seed.
	r := rand.New(rand.NewSource(int64(data.Len()*1000 + k)))
	moveTopKToFront(data, 0, data.Len(), k, r)
}