code: void configureClasses(String path) {
  
          findClassesInClasspath();
  
          if (StringUtils.isNotBlank(path)) {
              // If the path is set, set up class reloading:
              configureClassesReloadable(path);
          }
          packagePrefix = getValue(PACKAGE_PREFIX);
          classesReloadable = classesUrl != null && classesInClasspath == null;
  
          // Communicate:
          showClassesConfiguration();
      }
docs: Sets up configuration for reloading classes.
  
  @param path The directory that contains compiled classes. This will be
  monitored for changes.