Variable CanonicalFormatAgentPlacementAISurfaceSponsoredPlacement_ReferenceMutabilityValuesConst
CanonicalFormatAgentPlacementAISurfaceSponsoredPlacement_ReferenceMutabilityValues: readonly [
"immutable_snapshot",
"mutable_requires_reapproval",
"mutable_auto_recheck",
] = ...
single | CanonicalFormatAgentPlacementAISurfaceSponsoredPlacement.reference_mutability