[V9˖] Cache contract

Important notice

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The cache contract is fondamentally the same exact concept and class than the former known Cache Conditional (Wiki Doc).

However the class has changed its name:

The class \Phpfastcache\Helper\CacheConditionalHelper is now deprecated *, use \Phpfastcache\CacheContract instead.

This new class \Phpfastcache\CacheContract works exactly the same as before and nothing changed except its name and namespace.

* (but still usable with an E_USER_DEPRECATED notice)

🆕 Callable syntax available as of the V9

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However, as of the V9 this class is now also callable, this means you don't need to call the get() method if you want (via a simple __invoke() implementation):

// The old and still working known syntax
$value = (new CacheContract($cacheInstance))->get($cacheKey, static function() use ($testHelper){
        $testHelper->assertPass('The CacheContract class is callable via __invoke()');
        return null;
    });

// The new possible syntax: "->get" has been removed
$value = (new CacheContract($cacheInstance))($cacheKey, static function() use ($testHelper){
        $testHelper->assertPass('The CacheContract class is callable via __invoke()');
        return null;
    });

The both syntax are now possible, however the callable syntax would allow you some more complex implementation on projects that need a callable instead of an object. Note that the parameters of the callable syntax are EXACTLY the same as the get() method, in fact, internally, the __invoke() forward the call to the get() method and returns its returned value.