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: binding.go
    path of file: ./repos/codis/vendor/github.com/martini-contrib/binding
    
    the code of the file until where you have to start completion: // Package binding transforms a raw request into a struct
// ready to be used your application. It can also perform
// validation on the data and handle errors.
package binding

import (
	"encoding/json"
	"io"
	"mime/multipart"
	"net/http"
	"reflect"
	"strconv"
	"strings"

	"github.com/go-martini/martini"
)

/*
	For the land of Middle-ware Earth:
		One func to rule them all,
		One func to find t
    
func Json(jsonStruct interface{}, ifacePtr ...interface{}) martini.Handler {
	return func(context martini.Context, req *http.Request) {
		var errors Errors

		ensureNotPointer(jsonStruct)

		jsonStruct := reflect.New(reflect.TypeOf(jsonStruct))

		if req.Body != nil {
			defer req.Body.Close()
			err := json.NewDecoder(req.Body).Decode(jsonStruct.Interface())
			if err != nil && err != io.EOF {
				errors.Add([]string{}, DeserializationError, err.Error())
			}
		}

		validateAndMap(jsonStruct, context, errors, ifacePtr...)
	}
}