Sub domains

[MerrionComputing]

Need some way to create nested subdomains - for example in fund accounting you might have a top level "Account" domain with lower level "Holdings" and "Transactions" domains and perhaps under that domains by traded instrument classification.

Proposal is to have the domain name accept a dot separated notation which turns into the domain hierarchy.

e.g. Account.Transactions.Fixed Income would create a nested domain hierarchy Account -> Transactions -> Fixed income.

For blob backed event streams this would create a nested path so the hierarchy is evident from the file system hierarchy. (AppenBlob or File)