sdk/src/com/socialize/cache/TTLCache.java
public boolean exists(K k) {
		Key<K> key = keys.get(k);
		if(key != null) {
			return objects.get(key) != null;
		}
		return false;
	}
public boolean exists(K k) {
		Key<K> key = keys.get(k);
		if(key != null) {
			return objects.get(key) != null;
		}
		return false;
	}
Returns true if the object with the given key resides in the cache.
@param k
@return true if the object with the given key resides in the cache.