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: time.rs
    path of file: ./repos/rbatis/rbdc-mysql/src/types
    
    the code of the file until where you have to start completion: use bytes::Buf;
use rbdc::types::time::Time;
use rbdc::Error;
use std::str::FromStr;

use crate::types::{Decode, Encode};
use crate::value::{MySqlValue, MySqlValueFormat};

impl Encode for Time {
    fn encode(self, buf: &mut Vec<u8>) -> Result<usize, Error> {
        s
    
    fn encode(self, buf: &mut Vec<u8>) -> Result<usize, Error> {
        let size = {
            if self.nano == 0 {
                3
            } else {
                7
            }
        };
        buf.push(size as u8);

        buf.push(self.hour as u8); //1
        buf.push(self.minute as u8); //1
        buf.push(self.sec as u8); //1
        if self.nano != 0 {
            buf.extend(self.get_micro().to_le_bytes()); //4
        }
        Ok(size)
    }