Add Composer autoloading functions and PHPStan for testing

vendor/nette/di/src/DI/exceptions.php

@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * This file is part of the Nette Framework (https://nette.org)
+ * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
+ */
+
+namespace Nette\DI;
+
+use Nette;
+
+
+/**
+ * Service not found exception.
+ */
+class MissingServiceException extends Nette\InvalidStateException
+{
+}
+
+
+/**
+ * Service creation exception.
+ */
+class ServiceCreationException extends Nette\InvalidStateException
+{
+	public function setMessage($message)
+	{
+		$this->message = $message;
+		return $this;
+	}
+}