Client now has a client interface because it is marked final

Author: WyriHaximus

src/Client.php

@@ -6,7 +6,7 @@
 use Interop\Container\ContainerInterface;
 use React\Promise\CancellablePromiseInterface;
 
-final class Client
+final class Client implements ClientInterface
 {
     /**
      * @var ContainerInterface

src/ClientInterface.php

@@ -0,0 +1,25 @@
+<?php declare(strict_types=1);
+
+namespace ApiClients\Foundation;
+
+use Interop\Container\ContainerInterface;
+use React\Promise\CancellablePromiseInterface;
+
+interface ClientInterface
+{
+    /**
+     * @return ContainerInterface
+     */
+    public function getContainer(): ContainerInterface;
+
+    /**
+     * @return mixed
+     */
+    public function getFromContainer(string $id);
+
+    /**
+     * @param $command
+     * @return CancellablePromiseInterface
+     */
+    public function handle($command): CancellablePromiseInterface;
+}