docs: @Override
      public Set<Entry<String, GroovyRunner>> entrySet() {
          Map<String, GroovyRunner> map = getMap();
          readLock.lock();
          try {
              if (map.isEmpty()) {
                  return Collections.emptySet();
              }
              return Collections.unmodifiableSet(new LinkedHashSet<>(map.entrySet()));
          } finally {
              readLock.unlock();
          }
      }