code: public void decreaseInReachability(MEConnection conn, LinkCellule[] celluleList,
                                       MessagingEngine[] rmeList)
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(tc, "decreaseInReachability", new Object[] { this, conn, new Enumarray(celluleList), new Enumarray(rmeList)});
  
      removeConnection(conn);
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "decreaseInReachability");
    }
docs: Indicates that a set of cellules and/or RMEs are no longer reachable
  on a particular MEConnection.
  
  @param conn The connection on which reachability has changed.
  @param celluleList The set of cellules which are no longer reachable
  (may be a zero-length array).
  @param rmeList The set of RMEs which are no longer reachable (may be
  a zero-length array).