It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.
Checks if a specific entity type can spawn in the world at the given position with this PlacementType.
Returns: True if the entity type can spawn. False otherwise.
Return Type: boolean
// PlacementType.canSpawnAt(world as MCWorld, pos as BlockPos, entityType as MCEntityType) as boolean myPlacementType.canSpawnAt(world, new BlockPos(1,2,3), <entitytype:minecraft:pig>);