@startuml
class PlacementValidator {
    - collisionLayerMask : LayerMask
    - toleranceSkin : float = 0.05f
    - ignoredColliders : List<Collider>
    + SetLayerMask(cLayerMask:LayerMask) : void
    + IsValidPlacement(objToPlace:GameObject) : bool
}
MonoBehaviour <|-- PlacementValidator
IValidator <|-- PlacementValidator
@enduml