public function createGifCommandCmd(array $sourcesImages,
	                                    $resultImageName,
	                                    $resultDirectory,
	                                    $delay = 50,
	                                    $loop = 0)
	{
		$delayOption = $this->_createOption(Delay::class, $delay);
		$loopOption  = $this->_createOption(Loop::class, $loop);

		return 'convert ' . $delayOption . implode(' ', $sourcesImages) . ' ' . $loopOption . $resultDirectory
		       . DIRECTORY_SEPARATOR . $resultImageName . '.gif';
	}