assert(bar());
assert(add(1, 1) == 2);
assert(add(3, 3) == 6); assert(add(4, 4) == 8);
assert(add(5, 5) == 10); assert(add(6, 6) == 12);
Foo foo = new Foo;
SomeClass sc = new SomeClass;
Outer outer = new Outer;
Inner inner = new Inner;