Add interface for Config\Server.

Author: Potherca

src/Config/Server.php

@@ -6,7 +6,7 @@
 use Pdsinterop\Solid\Auth\Enum\OpenId\OpenIdConnectMetadata as OidcMeta;
 use Pdsinterop\Solid\Auth\Exception\LogicException;
 
-class Server implements JsonSerializable
+class Server implements ServerInterface
 {
     ////////////////////////////// CLASS PROPERTIES \\\\\\\\\\\\\\\\\\\\\\\\\\\\
 

src/Config/ServerInterface.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Pdsinterop\Solid\Auth\Config;
+
+use Pdsinterop\Solid\Auth\Exception\LogicException;
+
+interface ServerInterface extends \JsonSerializable
+{
+    public function get($key);
+
+    public function getRequired(): array;
+
+    public function __construct(array $data, bool $strict = false);
+
+    public function __toString(): string;
+
+    /**
+     * @return array
+     *
+     * @throws LogicException for missing required properties
+     */
+    public function jsonSerialize(): array;
+
+    public function validate(): bool;
+}