Per-operation support for the PSP's native subscription product. Provider
support is uneven (some PSPs expose no list endpoint, some no server-only
create), so one boolean would either fake or hide support — each operation
declares itself and PaymentService guards each passthrough separately.
All-false means the PSP has no native subscription engine (recurring runs
on the vault surface + the host-side SubscriptionManager instead).
Per-operation support for the PSP's native subscription product. Provider support is uneven (some PSPs expose no list endpoint, some no server-only create), so one boolean would either fake or hide support — each operation declares itself and
PaymentServiceguards each passthrough separately. All-false means the PSP has no native subscription engine (recurring runs on the vault surface + the host-side SubscriptionManager instead).