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: error_4.go
    path of file: ./repos/ultimate-go/go/design
    
    the code of the file until where you have to start completion: // -------------------
// Behavior as context
// -------------------

// Behavior as context allows us to use a custom error type as our context but avoid that type
// assertion back to the concrete. We get to maintain a level of decoupling in our code.

package main

import (
	"bufio"
	"fmt"
	"io"
	"log"
	"net"
)

// client represents a single connection in the room.
type client struct {
	name   string
	reader *bufio.Reader
}

// TypeAsContext shows how to check multiple types of possible custom error
// types that can be returned from the net package.
func (c *client) TypeAsContext() {
	for {
		// We are using reader interface value to decouple ourselves from the network read.
		line, err := c.reader.ReadString('\n')
		if err != nil {
			// This is using type as context like the previous example.
			// What special here is the method named Temporary. If it is, we can keep going but if not,
			// we ha
    
func (c *client) TypeAsContext() {
	for {
		// We are using reader interface value to decouple ourselves from the network read.
		line, err := c.reader.ReadString('\n')
		if err != nil {
			// This is using type as context like the previous example.
			// What special here is the method named Temporary. If it is, we can keep going but if not,
			// we have to break thing down and build thing back up.
			// Every one of these cases care only about 1 thing: the behavior of Temporary. This is
			// what important. We can switch here, from type as context to type as behavior if we
			// do this type assertion and only ask about the potential behavior of that concrete
			// type itself.
			// We can go ahead and declare our own interface called temporary like below.
			switch e := err.(type) {
			case *net.OpError:
				if !e.Temporary() {
					log.Println("Temporary: Client leaving chat")
					return
				}

			case *net.AddrError:
				if !e.Temporary() {
					log.Println("Temporary: Client leaving chat")
					return
				}

			case *net.DNSConfigError:
				if !e.Temporary() {
					log.Println("Temporary: Client leaving chat")
					return
				}

			default:
				if err == io.EOF {
					log.Println("EOF: Client leaving chat")
					return
				}

				log.Println("read-routine", err)
			}
		}

		fmt.Println(line)
	}
}