code: public synchronized void add(int id, SICoreConnection connection) {
          if (tc.isEntryEnabled())
              SibTr.entry(tc, "add", "" + id);
          map.put(id, connection);
          if (tc.isEntryEnabled())
              SibTr.exit(tc, "add");
      }
docs: Adds an SICoreConnection into this map with the specified ID.
  
  @param id
  @param connection