Get the default namespace of a user. The namespace can be used with all workbench commands via the -n flag. The default namespace is the namespace that is used when the -n flag is not provided and it is the namespace provided when the user first logs in to the Workbench UI.
This command has been replaced by namespaces get-active, which returns the full namespace details as JSON. To get only the namespace ID (matching the behavior of this command), use namespaces get-active --id.
