From cf108722f51017bebe533e1def80e72b14f24aa6 Mon Sep 17 00:00:00 2001
From: Gavin Wood <gavin@parity.io>
Date: Tue, 16 Mar 2021 14:07:11 +0100
Subject: [PATCH] Document a pub item (#8374)

---
 substrate/frame/staking/src/lib.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/substrate/frame/staking/src/lib.rs b/substrate/frame/staking/src/lib.rs
index 187f9f30e0..021b7f3be4 100644
--- a/substrate/frame/staking/src/lib.rs
+++ b/substrate/frame/staking/src/lib.rs
@@ -805,6 +805,8 @@ impl<Balance: Default> EraPayout<Balance> for () {
 	}
 }
 
+/// Adaptor to turn a `PiecewiseLinear` curve definition into an `EraPayout` impl, used for
+/// backwards compatibility.
 pub struct ConvertCurve<T>(sp_std::marker::PhantomData<T>);
 impl<
 	Balance: AtLeast32BitUnsigned + Clone,