/**
* @param ZoneInterface $zone
* @param ProvinceInterface $province
*
* @return boolean Province is contained in zone
*/
public function isProvinceContainedInZone(ZoneInterface $zone, ProvinceInterface $province)
{
return $zone->getMembers()->filter(function (ZoneMemberInterface $zoneMember) {
return $zoneMember instanceof ZoneProvinceMemberInterface;
})->exists(function ($_, ZoneProvinceMemberInterface $zoneProvinceMember) use($province) {
return $province->equals($zoneProvinceMember->getProvince());
});
}
