This is xnu-8019. See this file in:
Directory listing for xnu-8019//EXTERNAL_HEADERS/CoreEntitlements
CoreEntitlements.h
CoreEntitlementsPriv.h
Entitlements.h
EntitlementsPriv.h
Errors.h
KernelUtils.hpp
QueryHelpers.h
Result.h
Runtime.h
Serialization.h
der_vm.h