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diff --git a/lib/public/DB/QueryBuilder/ICompositeExpression.php b/lib/public/DB/QueryBuilder/ICompositeExpression.php
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+++ b/lib/public/DB/QueryBuilder/ICompositeExpression.php
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+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+namespace OCP\DB\QueryBuilder;
+
+/**
+ * This class provides a wrapper around Doctrine's CompositeExpression
+ * @since 8.2.0
+ */
+interface ICompositeExpression {
+	/**
+	 * Adds multiple parts to composite expression.
+	 *
+	 * @param array $parts
+	 *
+	 * @return ICompositeExpression
+	 * @since 8.2.0
+	 */
+	public function addMultiple(array $parts = []): ICompositeExpression;
+
+	/**
+	 * Adds an expression to composite expression.
+	 *
+	 * @param mixed $part
+	 *
+	 * @return ICompositeExpression
+	 * @since 8.2.0
+	 */
+	public function add($part): ICompositeExpression;
+
+	/**
+	 * Retrieves the amount of expressions on composite expression.
+	 *
+	 * @return integer
+	 * @since 8.2.0
+	 */
+	public function count(): int;
+
+	/**
+	 * Returns the type of this composite expression (AND/OR).
+	 *
+	 * @return string
+	 * @since 8.2.0
+	 */
+	public function getType(): string;
+}