code: List<Object> getConnections(ConnectionListener cl)
     {
        List<Object> l = null;
  
        if (clToC != null)
           l = clToC.get(cl);
  
        if (l == null)
           l = Collections.emptyList();
           
        return Collections.unmodifiableList(l);
     }
docs: Get the connections for a connection listener
  @param cl The connection listener
  @return The value