/**
* Does the specified offset exist in cache?
*
- * @param $offset The offset we are looking for
- * @return $exists Whether the offset exists
+ * @param $offset The offset we are looking for
+ * @param $arrayElement If type is array, then this element must be found
+ * @param $minimumCount If array element is found then this count must at least match
+ * @return $exists Whether the offset exists
*/
- function offsetExists($offset);
+ function offsetExists($offset, $arrayElement = NULL, $minimumCount = 0);
/**
* Setter for cache offset