<PackageReference Include="Microsoft.Data.SqlClient" Version="7.0.1" />

Interop.Windows.NtDll.ImpersonationLevel

Values that specify security impersonation levels. Security impersonation levels govern the degree to which a server process can act on behalf of a client process.
namespace Interop.Windows.NtDll { internal enum ImpersonationLevel { SecurityAnonymous, SecurityIdentification, SecurityImpersonation, SecurityDelegation } }