public static void setObjectAtOffset(Object object, int offset, Object newvalue) {
public static void setObjectAtOffset(Object object, Offset offset, Object newvalue) {
  public static void setObjectAtOffset(Object object, int offset, Object newvalue) {    if (VM.VerifyAssertions) VM._assert(VM.NOT_REACHED);  // call site should have been hijacked by magic in compiler  }