When I try to compile a unit in delphi mode with the following function

function Implements(out AReference; const AObject: TObject; const
AInterface: TGUID): Boolean;
begin
  Result := (AObject is TInterfacedObject) and
    ((AObject as TInterfacedObject).QueryInterface(AInterface, AReference) = 0);
end;

I get:

Utilities.pas(33,44) Error: identifier idents no member "QueryInterface"
Utilities.pas(33,58) Fatal: Syntax error, ")" expected but "(" found
Utilities.pas(33,58) Error: Compilation aborted

What am I doing wrong?

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