public static function getClasses(string $file): array
	{
		$php_code = file_get_contents($file);
		$classes = [];
		$tokens = token_get_all($php_code);
		$count = count($tokens);
		for ($i = 2; $i < $count; $i++) {
			if ($tokens[$i - 2][0] == T_CLASS && $tokens[$i - 1][0] == T_WHITESPACE && $tokens[$i][0] == T_STRING) {
				$class_name = $tokens[$i][1];
				$classes[] = $class_name;
			}
		}
		return $classes;
	}