Currently, the Go client does not support Hazelcast's partition predicate.

• The second call to such functions resolves immediately. e.g client.shutdown
• Using a deferred promise instead of a flag(e.g lifecycleService.active), we can return the same promise on concurrent calls.

Currently, Python Client has no support for Hazelcast's Aggregations which compute a value of some function (e.g sum or max) over the stored map entries.

https://docs.hazelcast.org/docs/3.12.7/manual/html-single/index.html#fast-aggregations

Hazelcast FlakeID Generator is not available to .NET Client.

https://docs.hazelcast.org/docs/4.0/manual/html-single/index.html#flakeidgenerator

Explanation for portable serialization multiversion support is missing from the README. Please refer to this pull request to update.