ExperimentalOptional Readonly ExperimentalfeatureRendered feature count (GeoJSON strategy only).
Optional Readonly ExperimentalgeometryGeometry kinds present in the materialized data (GeoJSON strategy only).
Optional Readonly ExperimentaloverflowSet when pagination limits truncated the materialized data.
Readonly ExperimentalreasonsWhy the strategy was selected (capabilities, probes, overrides).
Readonly ExperimentalstrategyOptional Readonly ExperimentaltotalMatching row count when known (GeoJSON strategy only).
Readonly ExperimentalupdatesLifecycle events appended by setFilter / refresh.
Explain/diagnostics surface returned on the handle: the chosen strategy, why it was chosen, and the current materialization state.