/**
	 * Convert an array of values to a string (or return string)
	 *
	 * @param  string  $path       Registry path (e.g. joomla.content.showauthor)
	 * @param  string  $seperator  Return string separator
	 *
	 * @return  string
	 * @since 3.2.0
	 */
	public function toString(string $path, string $separator = ''): string
	{
		// Return default value if path is empty
		if (empty($path))
		{
			return '';
		}

		// get the value
		if (($node = $this->get($path)) !== null)
		{
			if (is_array($node) && $node !== [])
			{
				return implode($separator, $node);
			}
			elseif (is_string($node) && strlen((string) $node) > 0)
			{
				return $node;
			}
		}

		return '';
	}