S3/Minio storage controller Support

storage-controllers/s3/Aws/Api/Serializer/RestXmlSerializer.php

@@ -0,0 +1,34 @@
+<?php
+namespace Aws\Api\Serializer;
+
+use Aws\Api\StructureShape;
+use Aws\Api\Service;
+
+/**
+ * @internal
+ */
+class RestXmlSerializer extends RestSerializer
+{
+    /** @var XmlBody */
+    private $xmlBody;
+
+    /**
+     * @param Service $api      Service API description
+     * @param string  $endpoint Endpoint to connect to
+     * @param XmlBody $xmlBody  Optional XML formatter to use
+     */
+    public function __construct(
+        Service $api,
+        $endpoint,
+        XmlBody $xmlBody = null
+    ) {
+        parent::__construct($api, $endpoint);
+        $this->xmlBody = $xmlBody ?: new XmlBody($api);
+    }
+
+    protected function payload(StructureShape $member, array $value, array &$opts)
+    {
+        $opts['headers']['Content-Type'] = 'application/xml';
+        $opts['body'] = (string) $this->xmlBody->build($member, $value);
+    }
+}