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: prepare_ok.rs
    path of file: ./repos/sqlx/sqlx-mysql/src/protocol/statement
    
    the code of the file until where you have to start completion: use bytes::{Buf, Bytes};

use crate::error::Error;
use crate::io::Decode;
use crate::protocol::Capabilities;

// https://dev.mysql.com/doc/internals/en/com-stmt-prepare-response.html#packet-COM_STMT_PREPARE_OK

#[derive(Debug)]
pub(crate) struct PrepareOk {
    pub(crate) statement_id: u32,
    pub(crate) columns: u16,
    pub(crate) params: u16,
    #[allow(unused)]
    pub(crate) warnings: u16,
}

impl Decode<'_, Capabilities> for PrepareOk {
    fn decode_with(buf: Bytes, _: Capabilities) -> Result<Self, Error> {
        const SIZE: usize = 12;

        let mut slice = buf.get(..SIZE).ok_or_else(|| {
            err_protocol!("PrepareOk expected 12 bytes but got {} bytes", buf.len())
        })?;

   
    
    fn decode_with(buf: Bytes, _: Capabilities) -> Result<Self, Error> {
        const SIZE: usize = 12;

        let mut slice = buf.get(..SIZE).ok_or_else(|| {
            err_protocol!("PrepareOk expected 12 bytes but got {} bytes", buf.len())
        })?;

        let status = slice.get_u8();
        if status != 0x00 {
            return Err(err_protocol!(
                "expected 0x00 (COM_STMT_PREPARE_OK) but found 0x{:02x}",
                status
            ));
        }

        let statement_id = slice.get_u32_le();
        let columns = slice.get_u16_le();
        let params = slice.get_u16_le();

        slice.advance(1); // reserved: string<1>

        let warnings = slice.get_u16_le();

        Ok(Self {
            statement_id,
            columns,
            params,
            warnings,
        })
    }