public function get_stored_controllers_hashes()
	{
	    $file = new File($this->controllers_hash_file);
		$file_content = $file->read();
		
		if(!empty($file_content))
		{
			$stored_controller_hashes = unserialize($file_content);
		}
		else
		{
			$stored_controller_hashes = array();
		}
		
		return $stored_controller_hashes;
	}