code: public void addComponent( BshClassPath bcp ) {
          if (bcp == null)
              return;
          if ( compPaths == null )
              compPaths = new ArrayList();
          compPaths.add( bcp );
          bcp.addListener( this );
      }
docs: Add the specified BshClassPath as a component of our path.
  Changes in the bcp will be reflected through us.