code: public void setClasspathref (Reference pathref)
      {
          _cloader = ClasspathUtils.getClassLoaderForPath(getProject(), pathref);
  
          // set the parent of the classloader to be the classloader used to load this task, rather
          // than the classloader used to load Ant, so that we have access to Narya classes like
          // TransportHint
          ((AntClassLoader)_cloader).setParent(getClass().getClassLoader());
      }
docs: Configures the classpath which we'll use to load service classes.