Trait BlockIdTo
pub trait BlockIdTo<Block>where
    Block: Block,{
    type Error: Error;
    // Required methods
    fn to_hash(
        &self,
        block_id: &BlockId<Block>,
    ) -> Result<Option<<Block as Block>::Hash>, Self::Error>;
    fn to_number(
        &self,
        block_id: &BlockId<Block>,
    ) -> Result<Option<<<Block as Block>::Header as Header>::Number>, Self::Error>;
}Expand description
Something that can convert a BlockId to a number or a hash.