S3/Minio storage controller Support

storage-controllers/s3/Aws/WorkMailMessageFlow/Exception/WorkMailMessageFlowException.php

@@ -0,0 +1,9 @@
+<?php
+namespace Aws\WorkMailMessageFlow\Exception;
+
+use Aws\Exception\AwsException;
+
+/**
+ * Represents an error interacting with the **Amazon WorkMail Message Flow** service.
+ */
+class WorkMailMessageFlowException extends AwsException {}

storage-controllers/s3/Aws/WorkMailMessageFlow/WorkMailMessageFlowClient.php

@@ -0,0 +1,11 @@
+<?php
+namespace Aws\WorkMailMessageFlow;
+
+use Aws\AwsClient;
+
+/**
+ * This client is used to interact with the **Amazon WorkMail Message Flow** service.
+ * @method \Aws\Result getRawMessageContent(array $args = [])
+ * @method \GuzzleHttp\Promise\Promise getRawMessageContentAsync(array $args = [])
+ */
+class WorkMailMessageFlowClient extends AwsClient {}