Initial Drupal 11 with DDEV setup

vendor/phootwork/collection/Collection.php

@@ -0,0 +1,54 @@
+<?php declare(strict_types=1);
+/**
+ * This file is part of the Phootwork package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @license MIT License
+ * @copyright Thomas Gossmann
+ */
+namespace phootwork\collection;
+
+/**
+ * Collection interface
+ *
+ * @author Thomas Gossmann
+ */
+interface Collection extends \Iterator {
+	/**
+	 * Resets the collection
+	 * 
+	 * @return void
+	 */
+	public function clear(): void;
+
+	/**
+	 * Checks whether this collection is empty
+	 * 
+	 * @return bool
+	 */
+	public function isEmpty(): bool;
+
+	/**
+	 * Checks whether the given element is in this collection
+	 * 
+	 * @param mixed $element
+	 *
+	 * @return bool
+	 */
+	public function contains(mixed $element): bool;
+
+	/**
+	 * Returns the amount of elements in this collection
+	 * 
+	 * @return int
+	 */
+	public function size(): int;
+
+	/**
+	 * Returns the collection as an array
+	 * 
+	 * @return array
+	 */
+	public function toArray(): array;
+}