Creates a handler set from typed Operation.LazyHandler pairings: definitions are
enumerable without loading any handler body, resolving an operation imports only that
operation's module — per-operation loading instead of per-plugin — and each pairing is checked,
so a definition cannot be wired to another operation's handler. Loaded handlers are cached per
key.
Creates a handler set from typed Operation.LazyHandler pairings: definitions are enumerable without loading any handler body, resolving an operation imports only that operation's module — per-operation loading instead of per-plugin — and each pairing is checked, so a definition cannot be wired to another operation's handler. Loaded handlers are cached per key.