docs: public void dumpDebugFile() {
      try {
        File f = File.createTempFile("elki-debug", ".svg");
        f.deleteOnExit();
        this.saveAsSVG(f);
        LoggingUtil.warning("Saved debug file to: " + f.getAbsolutePath());
      }
      catch(Throwable err) {
        // Ignore.
      }
    }