public MemoryResource claimMemoryResource(ResourceOwner owner, Address start, int size, int mode) throws ResourceNotFreeException;
public MemoryResource claimMemoryResource(ResourceOwner owner, Address start, Extent size, int mode) throws ResourceNotFreeException;
	public MemoryResource claimMemoryResource(ResourceOwner owner, Address start, int size, int mode) throws ResourceNotFreeException;