code: static void closeLink(CommsConnection conn) {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(tc, "closeLink", conn);
  
      conn.setSchemaSet(null);
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(tc, "closeLink");
    }
docs: Called when a connection closes.