USDLayer.Spec.MetadataCollection Read/write access to metadata stored on a spec. Declarationprotocol MetadataCollection TopicsInstance PropertiesinfoKeysisDormantlayermetadataInfoKeyspathspecTypeInstance MethodsclearInfo(_:)info(_:)setInfo(_:to:) RelationshipsConforming TypesUSDLayer.SpecUSDPrim.Attribute.SpecUSDPrim.Property.SpecUSDPrim.PseudoRootSpecUSDPrim.Relationship.SpecUSDPrim.SpecUSDPrim.VariantSetSpecUSDPrim.VariantSpec