#include"qemu/osdep.h"#include"qemu-common.h"#include"sysemu/sysemu.h"VMChangeStateEntry*qemu_add_vm_change_state_handler(VMChangeStateHandler*cb,void*opaque){returnNULL;}voidqemu_del_vm_change_state_handler(VMChangeStateEntry*e){/* Nothing to do. */}