-test_isa.nit:25,7--19: Warning: Expression is already a Object.
-test_isa.nit:34,7--19: Warning: Expression is already a Object.
-test_isa.nit:43,7--28: Warning: Expression is already a nullable Object.
+test_isa.nit:25,7--19: Warning: expression is already a `Object`.
+test_isa.nit:34,7--19: Warning: expression is already a `Object`.
+test_isa.nit:43,7--28: Warning: expression is already a `nullable Object`.
int:
true
true