platformSeqStore
Returns the platform-default SeqStore: a FileSeqStore under the app's private data directory, or an InMemorySeqStore if no writable directory is available (in which case counters do not survive a restart).
Returns the platform-default SeqStore: a FileSeqStore under the app's private data directory, or an InMemorySeqStore if no writable directory is available (in which case counters do not survive a restart).