private function checkLevelsAgainstExperiences(ProfessionLevels $professionLevels, Memories $memories, ExperiencesTable $experiencesTable)
{
$highestLevelRank = $professionLevels->getCurrentLevel()->getLevelRank();
$requiredExperiences = $experiencesTable->toTotalExperiences(new LevelBonus($highestLevelRank->getValue(), $experiencesTable));
$availableExperiences = $memories->getExperiences($experiencesTable);
if ($availableExperiences->getValue() < $requiredExperiences->getValue()) {
throw new Exceptions\InsufficientExperiences("Given level {$highestLevelRank} needs at least {$requiredExperiences} experiences, got only {$availableExperiences}");
}
}
