code: public void copyFrom(Frame<ValueType> other) {
          lastUpdateTimestamp = other.lastUpdateTimestamp;
          slotList = new ArrayList<>(other.slotList);
          isTop = other.isTop;
          isBottom = other.isBottom;
      }
docs: Make this Frame exactly the same as the one given as a parameter.
  
  @param other
  the Frame to make this object the same as