GetOrCreate stores the List corresponding to key, if it's not there already.

GetTokensTable returns TokensTable for an indexed attribute.

IndexTokens return tokens, without the predicate prefix and index rune.

Init initializes the posting lists package, the in memory and dirty list hash.

KeysForTest returns keys for a table.

NewTokensTable returns a new TokensTable.

WaterMarkFor returns the synced watermark for the given RAFT group.

Add means add new element in mutation layer.

Del means delete in mutation layer.

Set means overwrite in mutation layer.

ErrNoValue would be returned if no value was found in the posting list.

ErrRetry can be triggered if the posting list got deleted from memory due to a hard commit.

ListOptions is used in List.Uids (in posting) to customize our output list of UIDs, for each posting list.

TokensTable tracks the keys / tokens / buckets for an indexed attribute.