code: static public function isBetterMode($modeA, $modeB)
      {
          // TODO Find something more explicit than 'better' (availability ?)
  
          // TODO assert valid states ?
  
          if ($modeA === static::MODE_DISABLED) {
              return $modeB !== static::MODE_DISABLED;
          } elseif ($modeA === static::MODE_JUST_IN_TIME) {
              return in_array($modeB, [static::MODE_MANUAL, static::MODE_AUTO], true);
          }
  
          return false;
      }
docs: Returns whether the mode A is better than the mode B.
  
  @param string $modeA
  @param string $modeB
  
  @return bool