code: public void purgeClosedConnection(OutboundConnection connection)
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "purgeClosedConnection", connection);
          connection.getConnectionData().getConnectionDataGroup().purgeClosedConnection(connection);
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "purgeClosedConnection");
      }
docs: Purges a connection from the tracker, that has been closed by the remote peer, so
  can no longer be used.
  
  @param connection The connection to purge