-extern gpointer ves_icall_System_Security_Principal_WindowsIdentity_GetCurrentToken (void);
-extern MonoString* ves_icall_System_Security_Principal_WindowsIdentity_GetTokenName (gpointer token);
-extern gpointer ves_icall_System_Security_Principal_WindowsIdentity_GetUserToken (MonoString *username);
+extern gpointer ves_icall_System_Security_Principal_WindowsIdentity_GetCurrentToken (MonoError *error);
+extern MonoStringHandle ves_icall_System_Security_Principal_WindowsIdentity_GetTokenName (gpointer token, MonoError *error);
+extern gpointer ves_icall_System_Security_Principal_WindowsIdentity_GetUserToken (MonoStringHandle username, MonoError *error);