If I'm reading this correctly, it's basically saying if you have a variable, who's type is a Value Object (roughyl equivalent to a Basic type, lets say a long),

If I'm reading this correctly, it's basically saying if you have a variable, who's type is a Value Object (roughyl equivalent to a Basic type, lets say a long), then you may disallow null for this variable? If Value Types are supposed to be equivalents of Java Basic types, I would have expected this to be the only way they work. Sort of surprised to see this, so I'm probably missing something important.