docs: public Class loadScriptByName(String scriptName) throws ResourceException, ScriptException {
          URLConnection conn = rc.getResourceConnection(scriptName);
          String path = conn.getURL().toExternalForm();
          ScriptCacheEntry entry = scriptCache.get(path);
          Class clazz = null;
          if (entry != null) clazz = entry.scriptClass;
          try {
              if (isSourceNewer(entry)) {
                  try {
                      String encoding = conn.getContentEncoding() != null ? conn.getContentEncoding() : config.getSourceEncoding();
                      String content = IOGroovyMethods.getText(conn.getInputStream(), encoding);
                      clazz = groovyLoader.parseClass(content, path);
                  } catch (IOException e) {
                      throw new ResourceException(e);
                  }
              }
          } finally {
              forceClose(conn);
          }
          return clazz;
      }