public void renameCity(String oldName, String newName) {
for (Claim claim : claimMap.values()) {
if (oldName.equals(claim.getCityName())) claim.setCityName(newName);
}
City city = cityCache.get(oldName);
cityCache.remove(oldName);
city.rename(newName);
cityCache.put(newName, city);
for (PlayerCache pc : playerCache.values()) {
if (oldName.equals(pc.getCity())) pc.setCity(newName);
}
}
