Purge the entire cache
Delete a State object from the cache, by its uri
Clean up any dangling references to avoid memory leaks.
Return true if a State object with the specified uri exists in the cache
Store a State object.
This function will clone the state object before storing
The 'Forever' cache stores any State for as long as the application lives.
It is a good default for most applications, but it means that if a resource was changed server-side, Resource will not pick up that change until something was done to expire caches.
Executing an unsafe method, calling clearCache() on a resource, or when a resource appears in Location, Content-Location, or "invalidates" link relationships.