-base_as_notnull2.nit:30,12--25: Warning: expression is already not null, since it is a `G#0: Object`.
-base_as_notnull2.nit:50,12--25: Warning: expression is already not null, since it is a `G#0: Object`.
+base_as_notnull2.nit:30,12: Warning: expression is not null, since it is a `Object`.
+base_as_notnull2.nit:50,12: Warning: expression is not null, since it is a `F: Object`.
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