OptionaldistanceSnap distance in pixels; maps to SnappingConfig.tolerance.
OptionalenabledMaster switch. ArcGIS defaults snapping off.
OptionalfeatureSnap to features from featureSources.
OptionalfeatureOptionalselfSnap to the geometry being drawn. Stored for parity; self snapping is a runtime concern (index the active sketch source to approximate it).
ArcGIS
SnappingOptions-shaped configuration accepted by the shims.