pending

type Item interface {
	Key() []byte
	KeyCopy(dst []byte) []byte
	Value(fn func(val []byte) error) error
	IsDeletedOrExpired() bool
	ExpiresAt() uint64
	Version() uint64
}

type IterableMergedWrites interface {
	Writes
	MergedIterator(tx *badger.Txn, readTs uint64, opt badger.IteratorOptions) Iterator
}

type Iterator interface {
	Rewind()
	Next()
	Valid() bool
	Seek(key []byte)
	Key() []byte
	Item() Item
	Close()
}

type Writes interface {
	Iterator(prefix []byte, readTs uint64, reversed bool) Iterator
	Set(e *badger.Entry)
	Delete(key []byte)
	Replay(fn func(e *badger.Entry) error) error
	Close() error
}