add annotations for thrown exceptions

src/Converter/TimeConverterInterface.php

@@ -27,6 +27,8 @@ interface TimeConverterInterface
      * @param string $seconds
      * @param string $microSeconds
      * @return string[] An array guaranteed to contain `low`, `mid`, and `high` keys
+     * @throws \Ramsey\Uuid\Exception\UnsatisfiedDependencyException if called on a 32-bit system and
+     *     `Moontoast\Math\BigNumber` is not present
      * @link http://tools.ietf.org/html/rfc4122#section-4.2.2
      */
     public function calculateTime($seconds, $microSeconds);