SwiftDocCOutOfProcessReferenceResolverOutOfProcessReferenceResolver.ResolvedInformationOutOfProcessReferenceResolver.ResolvedInformation.VariantabstractInstance PropertyabstractThe abstract of the variant or nil if the abstract is the same as the resolved information.let abstract: Optional<String>DeprecatedThis type is only used in the outdated, and no longer recommended, version of the out-of-process external resolver communication protocol.