Why the signature of method set diffs from predis

[木蝶山人]

Result in mock fail.
The ex and nx parameters diff.
https://github.com/M6Web/RedisMock/blob/7438b0d8f94662d47dbd8931f5944d36f3a93e8e/src/M6Web/Component/RedisMock/RedisMock.php#L80

    public function set($key, $value, $seconds = null)
    {
        if (\is_array($seconds)) {
...

https://github.com/nrk/predis/blob/111d100ee389d624036b46b35ed0c9ac59c71313/src/ClientInterface.php#L63

@method mixed  set($key, $value, $expireResolution = null, $expireTTL = null, $flag = null)