data = initVal;
Immutable1 quad = i1.quadruple(); System.out.println("i1 = " + i1.read()); System.out.println("quad = " + quad.read());
Immutable1 x = new Immutable1(47); System.out.println("x = " + x.read()); f(x); System.out.println("x = " + x.read());
return data != 0;
return new Immutable1(data * 4);
return data;