OptionalentriesAn arbitrary ID (that isn't the first ID, last ID, or the zero "0-0". Use it to
find out how many entries are between the arbitrary ID (excluding it) and the stream's last
entry.
since Valkey version 7.0.0.
OptionalmkIf trueand the stream doesn't exist, creates a new stream with a length of 0.
Optional arguments for xgroupCreate.
See https://valkey.io/commands/xgroup-create/ for more details.