[Oberon] missing SYSTEM.ADR() in AOS for linux revision 5165

[Zdenek]

I am having problem compiling this code with the latest AOS for Linux
revision 5165:

MODULE Test2;
 
IMPORT SYSTEM;

VAR
  a, n: LONGINT;
  
PROCEDURE Adr*;
BEGIN
  n := SYSTEM.ADR(a);
END Adr;

BEGIN
END Test2.

Test2.Adr ~
SystemTools.Free Test2 ~


Compiler says: pos 93 undeclared identifier (selector)
There seems to be no SYSTEM.ADR procedure.
Why is SYSTEM.ADR in module SYSTEM absent?
It was working in AOS for Linux revision 5040.

Zdenek