code: public void removeConnectionDataFromGroup(ConnectionData cd) {
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "removeConnectionDataFromGroup", new Object[] { cd });
          boolean removed = false;
          synchronized (connectionData)
          {
              removed = connectionData.remove(cd);
          }
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "removeConnectionDataFromGroup", new Object[] { removed });
  
      }
docs: Remove the connection from the group
  
  @param cd