docs: protected void closeConnection(final String meUuid, boolean alreadyClosed) {
  
          final String methodName = "closeConnection";
          if (TraceComponent.isAnyTracingEnabled() && TRACE.isEntryEnabled()) {
              SibTr.entry(this, TRACE, methodName, new Object [] { meUuid, alreadyClosed });
          }
  
          final SibRaMessagingEngineConnection connection;
          synchronized (_connections) {
  
              connection = (SibRaMessagingEngineConnection) _connections
                      .remove(meUuid);
  
          }
  
          if (connection != null) {
              connection.close(alreadyClosed);
          }
  
          if (TraceComponent.isAnyTracingEnabled() && TRACE.isEntryEnabled()) {
              SibTr.exit(this, TRACE, methodName);
          }
  
      }