private void setSpaceGroupOfSpaces() {
		for(OwnableSpace space : railroadSpaces) {
			space.setGroup(railroadSpaces);
		}
		
		for(ArrayList<OwnableSpace> groupList : propertyGroups) {
			for(OwnableSpace space : groupList) {
				space.setGroup(groupList);
			}
		}
		
	}