code: public long popLastEntryPosition() throws IOException {
      // BROWSE IN ASCENDING ORDER UNTIL A GOOD POSITION IS FOUND (!=-1)
      for (int pos = getHoles() - 1; pos >= 0; --pos) {
        final long recycledPosition = file.readLong(pos * RECORD_SIZE);
  
        if (recycledPosition > -1) {
          if (OLogManager.instance().isDebugEnabled())
            OLogManager.instance().debug(this, "Recycled hole %s/#%d -> #%d:%d", owner.getName(), pos, owner.getId(),
                recycledPosition);
  
          // SHRINK THE FILE
          file.removeTail((getHoles() - pos) * RECORD_SIZE);
  
          return recycledPosition;
        }
      }
  
      return -1;
    }
docs: Returns and remove the recycled position if any.
  
  @return the recycled position if found, otherwise -1 that usually means to request more space.
  @throws IOException