/// Blocking transaction with operations.
    ///
    /// Consecutive operations of same type are merged. See [transaction contract] for details.
    ///
    /// [transaction contract]: embedded_hal_1::i2c::I2c::transaction
    pub fn blocking_transaction(&mut self, addr: u8, operations: &mut [Operation<'_>]) -> Result<(), Error> {
        let _ = addr;
        let _ = operations;
        todo!()
    }