public @NotNull List<ConfigurableUsageTarget> getAll() {
    synchronized (myHistory) {
      List<ConfigurableUsageTarget> result = new ArrayList<>();
      final Set<ConfigurableUsageTarget> entries = myHistory.keySet();
      for (Iterator<ConfigurableUsageTarget> iterator = entries.iterator(); iterator.hasNext(); ) {
        final ConfigurableUsageTarget target = iterator.next();
        if (!target.isValid()) {
          iterator.remove();
        }
        else {
          result.add(target);
        }
      }
      return result;
    }
  }
public @NotNull List<ConfigurableUsageTarget> getAll()