auto arr = [1, 2, 3, 4];
auto sl0 = arr.sliced;
auto sl1 = arr.slicedField;

assert(sl0.field is arr);
assert(sl1.field is arr);

arr = arr[1 .. $];
sl0 = sl0[1 .. $];
sl1 = sl1[1 .. $];

assert(sl0.field is arr);
assert(sl1.field is arr);
assert((cast(const)sl1).field is arr);
()@trusted{ assert((cast(immutable)sl1).field is arr); }();