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: demo85.go
    path of file: ./repos/Golang_Puzzlers/src/puzzlers/article33/q2
    
    the code of the file until where you have to start completion: package main

import (
	"bufio"
	"fmt"
	"strings"
)

func main() {
	comment := "Package bufio implements buffered I/O. " +
		"It wraps an io.Reader or io.Writer object, " +
		"creating another object (Reader or Writer) that " +
		"also implements the interface but provides buffering and " +
		"some help for textual I/O."
	basicReader := strings.NewReader(comment)
	fmt.Printf("The size of basic reader: %d\n", basicReader.Size())

	size := 300
	fmt.Printf("New a buffered reader with size %d ...\n", size)
	reader1 := bufio.NewReaderSize(basicReader, size)
	fmt.Println()

	fmt.Print("[ About 'Peek' method ]\n\n")
	// 示例1。
	peekNum := 38
	fmt.Printf("Peek %d bytes ...\n", peekNum)
	bytes, err := reader1.Peek(peekNum)
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	fmt.Printf("Peeked contents(%d): %q\n", len(bytes), bytes)
	fmt.Printf("The number of unread bytes in the buffer: %d\n", reader1.Buffered())
	fmt.Println()

	fmt.Print("[ About 'Read' method ]\n\n")
	// 示例2。
	readNum := 38
	buf1 := make([]byte, readNum)
	fmt.Printf("Read %d bytes ...\n", readNum)
	n, err := reader1.Read(buf1)

    
func main() {
	comment := "Package bufio implements buffered I/O. " +
		"It wraps an io.Reader or io.Writer object, " +
		"creating another object (Reader or Writer) that " +
		"also implements the interface but provides buffering and " +
		"some help for textual I/O."
	basicReader := strings.NewReader(comment)
	fmt.Printf("The size of basic reader: %d\n", basicReader.Size())

	size := 300
	fmt.Printf("New a buffered reader with size %d ...\n", size)
	reader1 := bufio.NewReaderSize(basicReader, size)
	fmt.Println()

	fmt.Print("[ About 'Peek' method ]\n\n")
	// 示例1。
	peekNum := 38
	fmt.Printf("Peek %d bytes ...\n", peekNum)
	bytes, err := reader1.Peek(peekNum)
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	fmt.Printf("Peeked contents(%d): %q\n", len(bytes), bytes)
	fmt.Printf("The number of unread bytes in the buffer: %d\n", reader1.Buffered())
	fmt.Println()

	fmt.Print("[ About 'Read' method ]\n\n")
	// 示例2。
	readNum := 38
	buf1 := make([]byte, readNum)
	fmt.Printf("Read %d bytes ...\n", readNum)
	n, err := reader1.Read(buf1)
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	fmt.Printf("Read contents(%d): %q\n", n, buf1)
	fmt.Printf("The number of unread bytes in the buffer: %d\n", reader1.Buffered())
	fmt.Println()

	fmt.Print("[ About 'ReadSlice' method ]\n\n")
	// 示例3。
	fmt.Println("Reset the basic reader ...")
	basicReader.Reset(comment)
	fmt.Println("Reset the buffered reader ...")
	reader1.Reset(basicReader)
	fmt.Println()

	delimiter := byte('(')
	fmt.Printf("Read slice with delimiter %q...\n", delimiter)
	line, err := reader1.ReadSlice(delimiter)
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	fmt.Printf("Read contents(%d): %q\n", len(line), line)
	fmt.Printf("The number of unread bytes in the buffer: %d\n", reader1.Buffered())
	fmt.Println()

	delimiter = byte('[')
	fmt.Printf("Read slice with delimiter %q...\n", delimiter)
	line, err = reader1.ReadSlice(delimiter)
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	fmt.Printf("Read contents(%d): %q\n", len(line), line)
	fmt.Printf("The number of unread bytes in the buffer: %d\n", reader1.Buffered())
	fmt.Println()

	// 示例4。
	fmt.Println("Reset the basic reader ...")
	basicReader.Reset(comment)
	size = 200
	fmt.Printf("New a buffered reader with size %d ...\n", size)
	reader2 := bufio.NewReaderSize(basicReader, size)
	fmt.Println()

	delimiter = byte('[')
	fmt.Printf("Read slice with delimiter %q...\n", delimiter)
	line, err = reader2.ReadSlice(delimiter)
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	fmt.Printf("Read contents(%d): %q\n", len(line), line)
	fmt.Printf("The number of unread bytes in the buffer: %d\n", reader2.Buffered())
	fmt.Println()

	fmt.Print("[ About 'ReadBytes' method ]\n\n")
	// 示例5。
	fmt.Println("Reset the basic reader ...")
	basicReader.Reset(comment)
	size = 200
	fmt.Printf("New a buffered reader with size %d ...\n", size)
	reader3 := bufio.NewReaderSize(basicReader, size)
	fmt.Println()

	delimiter = byte('[')
	fmt.Printf("Read bytes with delimiter %q...\n", delimiter)
	line, err = reader3.ReadBytes(delimiter)
	if err != nil {
		fmt.Printf("error: %v\n", err)
	}
	fmt.Printf("Read contents(%d): %q\n", len(line), line)
	fmt.Printf("The number of unread bytes in the buffer: %d\n", reader3.Buffered())
	fmt.Println()

	// 示例6和示例7。
	fmt.Print("[ About contents leak ]\n\n")
	showContentsLeak(comment)
}