This is in contrast to volatility-2.x where object were automatically
instantiated with a native_vm (or native_layer in 3.x parlance) and then
any dereferences occurred in the correct layer.
The space savings are now minimal since each object carries around only
a layer name, and not a reference to the entire space. However, given
situations such as kernel structures containing pointers into
process spaces, where the native_vm is useless, this decision is
designed to make working on a particular layer explicit and therefore
more obvious. It may mean exposing that up through levels of functions,
but hopefully it will make all the code more obvious and less
automagical.