contains
Allows to check if a MapProperties instance contains a property mapped to key with Kotlin in
operator.
Return
true if the property with the given key can be found in this MapProperties. False otherwise.
Parameters
key
name of the property.
Extension operator to check if a certain MapLayer is part of the TiledMap
Return
true if and only if the layer does exist.
Parameters
layerName
name of MapLayer.