You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: i2c_slave.rs
    path of file: ./repos/embassy/embassy-rp/src
    
    the code of the file until where you have to start completion: //! I2C slave driver.
use core::future;
use core::marker::PhantomData;
use core::task::Poll;

use embassy_hal_internal::into_ref;
use pac::i2c;

use crate::i2c::{
    i2c_reserved_addr, set_up_i2c_pin, AbortReason, 
    
    pub async fn respond_and_fill(&mut self, buffer: &[u8], fill: u8) -> Result<ReadStatus, Error> {
        let resp_stat = self.respond_to_read(buffer).await?;

        if resp_stat == ReadStatus::NeedMoreBytes {
            self.respond_till_stop(fill).await?;
            Ok(ReadStatus::Done)
        } else {
            Ok(resp_stat)
        }
    }