func MustPrewrite(store MVCCStore, mutations []*kvrpcpb.Mutation, primary string, startTS uint64, ttl uint64) bool {
	return mustPrewriteWithTTL(store, mutations, primary, startTS, ttl)
}
MustPrewrite write mutations to mvcc store.
package mocktikv
import "github.com/pingcap/kvproto/pkg/kvrpcpb"
var PutMutations = putMutations
func putMutations(kvpairs ...string) []*kvrpcpb.Mutation {
	var mutations []*kvrpcpb.Mutation
	for i := 0; i < len(kvpairs); i += 2 {
		mutations = append(mutations, &kvrpcpb.Mutation{
			Op:    kvrpcpb.Op_Put,
			Key:   []byte(kvpairs[i]),
			Value: []byte(kvpairs[i+1]),
		})
	}
	return mutations
}