docs: @Override
      public GroovyRunner remove(Object key) {
          if (key == null) {
              return null;
          }
          Map<String, GroovyRunner> map = getMap();
          writeLock.lock();
          try {
              cachedValues = null;
              return map.remove(key);
          } finally {
              writeLock.unlock();
          }
      }