docs: protected static int installationOrder(Skill skill) {
  		final int len = StandardBuiltinCapacitiesProvider.SKILL_INSTALLATION_ORDER.length;
  		if (skill instanceof BuiltinSkill) {
  			for (int i = 0; i < len; ++i) {
  				final Class<? extends Skill> type = StandardBuiltinCapacitiesProvider.SKILL_INSTALLATION_ORDER[i];
  				if (type.isInstance(skill)) {
  					return i;
  				}
  			}
  		}
  		return len;
  	}