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: index.go
    path of file: ./repos/iris/_examples/dependency-injection/sessions/routes
    
    the code of the file until where you have to start completion: package routes

import (
	"fmt"

	"github.com/kataras/iris/v12/sessions"
)

// Index will increment a
    
func Index(session *sessions.Session) string {
	// it increments a "visits" value of integer by one,
	// if the entry with key 'visits' doesn't exist it will create it for you.
	visits := session.Increment("visits", 1)

	// write the current, updated visits.
	return fmt.Sprintf("%d visit(s) from my current session", visits)
}