From d92926cbc289ab72ef1d8140baa32e0a09a7b580 Mon Sep 17 00:00:00 2001
From: Leonid Ganeline <leo.gan.57@gmail.com>
Date: Tue, 18 Jul 2023 18:25:42 -0700
Subject: [PATCH] docstrings `chains` (#7892)

Added/updated docstrings.