code: public void addEntry(Entry newEntry, long currentTime){
      	newEntry.setNode(this);
          int freePosition = getNextEmptyPosition();
          entries[freePosition].initializeEntry(newEntry, currentTime);
      }
docs: Add a new <code>Entry</code> to this node. If there is no space left a
  <code>NoFreeEntryException</code> is thrown.
  @param newEntry The <code>Entry</code> to be added.
  @throws NoFreeEntryException Is thrown when there is no space left in
  the node for the new entry.