CacheExpiryPolicy < K , V > function ( ) { return policy ; }
returns the cache 's expiration policy . concode_field_sep CacheExpirationHandler<K,V> handler concode_elem_sep CacheExpiryPolicy<K,V> policy concode_field_sep void expired concode_elem_sep CacheElementRevision<K,V> retrieve concode_elem_sep CacheExpirationHandler<K,V> getHandler concode_elem_sep CacheExpiry<K,V> DEFAULT