Scope.allocateArray allows to convert a Java array into a native array, it is possible to have an empty Java array. It would be a burden to developer to make sure the array is not empty for every usage.

When native call use array, it's typically a pointer and a size. An empty Array usually means pass a null pointer(or any pointer as it's likely be ignored) and size 0.

It would be nice to have an empty Array with length() returns 0 and elementPoitner() returns Poitner.nullPointer().