Integer (Integer x) { if (x == null) { return 0; } if (x + 3 < 10) { return <warning descr="'null' is returned by the method which is not declared as @Nullable">null</warning>; } if (<warning descr="Condition 'x == 3' is always 'false'">x == 3</warning>) { // Can't enter return 100; } return x * 2; }