RewindableKernelView

/// Rewindable (but readonly) view of the kernel set (based on kernel MMR).
pub struct RewindableKernelView<'a> {
    pmmr: RewindablePMMR<'a, TxKernel, PMMRBackend<TxKernel>>,
    batch: &'a Batch<'a>,
    header: BlockHeader,
}