}
        if (keyObj instanceof final Number key) {
            return key.toString();
        }
        return "-";
    }

    protected OptionalThing<String> getCacheKey(final Object keyObj) {
        if (keyObj instanceof final UrlQueue<?> urlQueue) {
            return OptionalThing.of(urlQueue.getId().toString());
        }
        if (keyObj instanceof final StatsKeyObject statsKey) {

        } finally {
            if (timeoutTask != null && !timeoutTask.isCanceled()) {
                timeoutTask.cancel();
            }
        }

        return resultBuf.toString();

    }

    protected void executeThumbnailGenerator() {
        final List<String> cmdList = new ArrayList<>();
        final String cpSeparator = SystemUtils.IS_OS_WINDOWS ? ";" : ":";

    }

    @Override
    public String toString() {
        return getClass().getSimpleName() + ":" + doBuildColumnString(", ") + "@" + Integer.toHexString(hashCode());
    }

    protected abstract String doBuildColumnString(String dm);

    @Override
    public String toStringWithRelation() { // #pending
        return toString();
    }

    @Override

    @Override
    public int hashCode() {
      assertTrue(Thread.holdsLock(mutex));
      return super.hashCode();
    }

    @Override
    public String toString() {
      assertTrue(Thread.holdsLock(mutex));
      return super.toString();
    }

    private static final long serialVersionUID = 0;
  }

  /*
   * This is somewhat of a weak test; we verify that all of the methods are

    abstract int readParametersWireFormat( byte[] buffer, int bufferIndex, int len );
    abstract int readDataWireFormat( byte[] buffer, int bufferIndex, int len );

    public String toString() {
        return new String( super.toString() +
            ",totalParameterCount=" + totalParameterCount +
            ",totalDataCount=" + totalDataCount +
            ",parameterCount=" + parameterCount +

                }
            }
        } catch( UnsupportedEncodingException uee ) {
        }
        return srcIndex - start;
    }
    public String toString() {
        return new String( "NodeStatusResponse[" +
            super.toString() + "]" );
    }

        this.target = target;
    }

    @Override
    public String toString() {
        return "[ " + "FROM:("
                + (source == null ? "no source" : (source.md == null ? "no source MD" : source.md.toString())) + ") "
                + "TO:(" + (target == null ? "no target" : (target.md == null ? "no target MD" : target.md.toString()))

  public V get(long timeout, TimeUnit unit)
      throws InterruptedException, ExecutionException, TimeoutException {
    return delegate.get(timeout, unit);
  }

  @Override
  public String toString() {
    return delegate.toString();
  }

   *
   * @return the 'dead' event that could not be delivered.
   */
  public Object getEvent() {
    return event;
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this).add("source", source).add("event", event).toString();
  }

    }


    @Override
    protected int readDataWireFormat ( byte[] buffer, int bufferIndex, int len ) {
        return 0;
    }


    @Override
    public String toString () {
        return new String("TransPeekNamedPipe[" + super.toString() + ",pipeName=" + this.name + "]");
    }