/// If the recipient or an intermediate node misbehaves and gives us free money, this may
/// overstate the amount paid, though this is unlikely.
///
+ /// This is only `None` for payments initiated on LDK versions prior to 0.0.103.
+ ///
/// [`Route::get_total_fees`]: crate::routing::router::Route::get_total_fees
fee_paid_msat: Option<u64>,
},