first changed

app/code/vendor/facade/flare-client-php/src/Time/SystemTime.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Facade\FlareClient\Time;
+
+use DateTimeImmutable;
+
+class SystemTime implements Time
+{
+    public function getCurrentTime(): int
+    {
+        return (new DateTimeImmutable())->getTimestamp();
+    }
+}

app/code/vendor/facade/flare-client-php/src/Time/Time.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Facade\FlareClient\Time;
+
+interface Time
+{
+    public function getCurrentTime(): int;
+}