public function isCached($fileID)
    {
        if (Storage::disk($this->cache_disk)->exists($this->generateCacheFilePath($fileID))) {
            return true;
        }
    }
public function isCached($fileID)
    {
        if (Storage::disk($this->cache_disk)->exists($this->generateCacheFilePath($fileID))) {
            return true;
        }
    }
public function isCached ( $ fileID ) { if ( Storage :: disk ( $ this -> cache_disk ) -> exists ( $ this -> generateCacheFilePath ( $ fileID ) ) ) { return true ; } }
Check if file exists in cache.

@return bool
Check if file exists in cache .