1package bug
 2
 3type OperationType int
 4
 5const (
 6	UNKNOWN OperationType = iota
 7	CREATE
 8	SET_TITLE
 9	ADD_COMMENT
10)
11
12type Operation interface {
13	OpType() OperationType
14	Apply(snapshot Snapshot) Snapshot
15}
16
17type OpBase struct {
18	OperationType OperationType
19}
20
21func (op OpBase) OpType() OperationType {
22	return op.OperationType
23}