public synchronized  Client editClient(Client client) {
		if (client != null) {
			for (Client clientAux : listClient) {

				if (clientAux.getMail().equals(client.getMail())) {
					listClient.remove(clientAux);					
					try {
						listClient.put(client);						
					} catch (InterruptedException e) {
						e.getMessage();
					} catch (NullPointerException e) {
						e.getMessage();
					}
					logger.info("Client: " + client.getName() + " atualizado!");
					return clientAux;
				}
			}
		}
		return null;
	}