public long getLong(String key, Filter filter) { Long value = getLong(key, filter, null); assertNotNull(key, value); return value.longValue();
public long getLong(String key) { return properties.getLong(key);
    public long getLong(String key, Filter filter) {        Long value = getLong(key, filter, null);                assertNotNull(key, value);        return value.longValue();    }