diff --git a/lib/public/Comments/ICommentsManager.php b/lib/public/Comments/ICommentsManager.php
index 0ff762e51d041..7e59b5c7b0670 100644
--- a/lib/public/Comments/ICommentsManager.php
+++ b/lib/public/Comments/ICommentsManager.php
@@ -108,6 +108,7 @@ public function getForObject(
 	 * @param int $limit optional, number of maximum comments to be returned. if
 	 *                   set to 0, all comments are returned.
 	 * @param bool $includeLastKnown
+	 * @param string $topmostParentId Limit the comments to a list of replies and its original root comment
 	 * @return list<IComment>
 	 * @since 14.0.0
 	 * @deprecated 24.0.0 - Use getCommentsWithVerbForObjectSinceComment instead
@@ -119,6 +120,7 @@ public function getForObjectSince(
 		string $sortDirection = 'asc',
 		int $limit = 30,
 		bool $includeLastKnown = false,
+		string $topmostParentId = '',
 	): array;
 
 	/**
@@ -130,6 +132,7 @@ public function getForObjectSince(
 	 * @param int $limit optional, number of maximum comments to be returned. if
 	 *                   set to 0, all comments are returned.
 	 * @param bool $includeLastKnown
+	 * @param string $topmostParentId Limit the comments to a list of replies and its original root comment
 	 * @return list<IComment>
 	 * @since 24.0.0
 	 */
@@ -141,6 +144,7 @@ public function getCommentsWithVerbForObjectSinceComment(
 		string $sortDirection = 'asc',
 		int $limit = 30,
 		bool $includeLastKnown = false,
+		string $topmostParentId = '',
 	): array;
 
 	/**
diff --git a/tests/lib/Comments/FakeManager.php b/tests/lib/Comments/FakeManager.php
index 64a25ef46c8ee..15efed5e7dcb9 100644
--- a/tests/lib/Comments/FakeManager.php
+++ b/tests/lib/Comments/FakeManager.php
@@ -38,6 +38,7 @@ public function getForObjectSince(
 		string $sortDirection = 'asc',
 		int $limit = 30,
 		bool $includeLastKnown = false,
+		string $topmostParentId = '',
 	): array {
 		return [];
 	}
@@ -50,6 +51,7 @@ public function getCommentsWithVerbForObjectSinceComment(
 		string $sortDirection = 'asc',
 		int $limit = 30,
 		bool $includeLastKnown = false,
+		string $topmostParentId = '',
 	): array {
 		return [];
 	}