Whether documentType is a system document: one in Sanity's reserved
sanity. or system. namespaces, or one the engine owns and writes for
itself. A subject entry that declares no types never matches one. Naming
a reserved type such as sanity.imageAsset or system.release in types
explicitly still matches; an engine-owned type does not, even when named,
at every applicability read.
Whether
documentTypeis a system document: one in Sanity's reservedsanity.orsystem.namespaces, or one the engine owns and writes for itself. A subject entry that declares notypesnever matches one. Naming a reserved type such assanity.imageAssetorsystem.releaseintypesexplicitly still matches; an engine-owned type does not, even when named, at every applicability read.