use ;
/// Bidding is allowed to target either the top of the block or any position in
/// the block.
/// The BidRequest signals intent to bid on the `kind` at `height` for the given
/// `chain_id`. The bid is implicit in the payment transactions/messages included
/// in the `txs` list.
/// A BidResponse is the indication that the request well formed and considered
/// for the given `chain_id` and `height`, but it does not imply guaranteed inclusion.