docs: private void load() throws IOException
      {
          if ( !knownHosts.exists() )
          {
              return;
          }
  
          assertKnownHostFileReadable();
  
          try ( BufferedReader reader = new BufferedReader( new FileReader( knownHosts ) ) )
          {
              String line;
              while ( (line = reader.readLine()) != null )
              {
                  if ( (!line.trim().startsWith( "#" )) )
                  {
                      String[] strings = line.split( " " );
                      if ( strings[0].trim().equals( serverId ) )
                      {
                          // load the certificate
                          fingerprint = strings[1].trim();
                          return;
                      }
                  }
              }
          }
      }