src/ResourcePacks/AgeOfEmpires/Map.php
public static function isStandardMap($id)
    {
        return in_array($id, [
              self::ARABIA, self::ARCHIPELAGO, self::BALTIC, self::BLACKFOREST,
              self::COASTAL, self::CONTINENTAL, self::CRATERLAKE,
              self::FORTRESS, self::GOLDRUSH, self::HIGHLAND, self::ISLANDS,
              self::MEDITERRANEAN, self::MIGRATION, self::RIVERS,
              self::TEAMISLANDS, self::SCANDINAVIA, self::MONGOLIA,
              self::YUCATAN, self::SALTMARSH, self::ARENA, self::KINGOFTHEHILL,
              self::OASIS, self::GHOSTLAKE, self::NOMAD,
              self::RANDOM,
        ]);
    }
public static function isStandardMap($id)
    {
        return in_array($id, [
              self::ARABIA, self::ARCHIPELAGO, self::BALTIC, self::BLACKFOREST,
              self::COASTAL, self::CONTINENTAL, self::CRATERLAKE,
              self::FORTRESS, self::GOLDRUSH, self::HIGHLAND, self::ISLANDS,
              self::MEDITERRANEAN, self::MIGRATION, self::RIVERS,
              self::TEAMISLANDS, self::SCANDINAVIA, self::MONGOLIA,
              self::YUCATAN, self::SALTMARSH, self::ARENA, self::KINGOFTHEHILL,
              self::OASIS, self::GHOSTLAKE, self::NOMAD,
              self::RANDOM,
        ]);
    }
public static function isStandardMap ( $ id ) { return in_array ( $ id , [ self :: ARABIA , self :: ARCHIPELAGO , self :: BALTIC , self :: BLACKFOREST , self :: COASTAL , self :: CONTINENTAL , self :: CRATERLAKE , self :: FORTRESS , self :: GOLDRUSH , self :: HIGHLAND , self :: ISLANDS , self :: MEDITERRANEAN , self :: MIGRATION , self :: RIVERS , self :: TEAMISLANDS , self :: SCANDINAVIA , self :: MONGOLIA , self :: YUCATAN , self :: SALTMARSH , self :: ARENA , self :: KINGOFTHEHILL , self :: OASIS , self :: GHOSTLAKE , self :: NOMAD , self :: RANDOM , ] ) ; }
Check whether a map ID denotes a builtin map.

@see \RecAnalyst\ResourcePacks\AgeOfEmpires::isCustomMap
For the inverse.
@param int  $id  Map ID.
@return bool True if the map is builtin, false otherwise.
Check whether a map ID denotes a builtin map .