First set of tests, argument unwrapping/injection

src/Command.php

@@ -31,7 +31,9 @@ class Command
     public function call(Context $context): PromiseInterface
     {
         return new Promise(function (callable $resolve) use ($context) {
-            $resolve(call_user_func($this->handler, $context));
+            $args = $context->toMethodParameters($this->handler);
+            $resolve(call_user_func($this->handler, ...$args));
+            //$resolve(call_user_func($this->handler, $context));
             return;
         });
     }