lots of improvements

shared/lib/Mail/Collection/CollectionBaseAbstract.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXF\Mail\Collection;
+
+use KTXF\Resource\Provider\Node\NodeBaseAbstract;
+
+/**
+ * Abstract Mail Collection Base Class
+ * 
+ * Provides common implementation for mail collections
+ * 
+ * @since 2025.05.01
+ */
+abstract class CollectionBase extends NodeBaseAbstract implements CollectionBaseInterface {
+
+    protected CollectionPropertiesBaseAbstract $properties;
+
+    /**
+     * @inheritDoc
+     */
+    public function getProperties(): CollectionPropertiesBaseInterface {
+        return $this->properties;
+    }
+}