func (r *Request) MultipartForm() (*multipart.Form, error) {
	return r.RequestCtx.MultipartForm()
}
MultipartForm implements `engine.Request#MultipartForm` function.
package fasthttp
import (
	"bytes"
	"io"
	"mime/multipart"
	"github.com/labstack/echo"
	"github.com/labstack/echo/engine"
	"github.com/labstack/echo/log"
	"github.com/valyala/fasthttp"
)
type (
	Request struct {
		*fasthttp.RequestCtx
		header engine.Header
		url    engine.URL
		logger log.Logger
	}
)
func NewRequest(c *fasthttp.RequestCtx, l log.Logger) *Request {
	return &Request{
		RequestCtx: c,
		url:        &URL{URI: c.URI()},
		header:     &RequestHeader{RequestHeader: &c.Request.Header},
		logger:     l,
	}
}
func (r *Request) IsTLS() bool {
	return r.RequestCtx.IsTLS()
}
func (r *Request) Scheme() string {
	return string(r.RequestCtx.URI().Scheme())
}
func (r *Request) Host() string {
	return string(r.RequestCtx.Host())
}
func (r *Request) URL() engine.URL {
	return r.url
}
func (r *Request) Header() engine.Header {
	return r.header
}
func (r *Request) Referer() string {
	return string(r.Request.Header.Referer())
}
func (r *Request) ContentLength() int64 {
	return int64(r.Request.Header.ContentLength())
}
func (r *Request) UserAgent() string {
	return string(r.RequestCtx.UserAgent())
}
func (r *Request) RemoteAddress() string {
	return r.RemoteAddr().String()
}
func (r *Request) Method() string {
	return string(r.RequestCtx.Method())
}
func (r *Request) SetMethod(method string) {
	r.Request.Header.SetMethodBytes([]byte(method))
}
func (r *Request) URI() string {
	return string(r.RequestURI())
}
func (r *Request) SetURI(uri string) {
	r.Request.Header.SetRequestURI(uri)
}
func (r *Request) Body() io.Reader {
	return bytes.NewBuffer(r.Request.Body())
}
func (r *Request) SetBody(reader io.Reader) {
	r.Request.SetBodyStream(reader, 0)
}
func (r *Request) FormValue(name string) string {
	return string(r.RequestCtx.FormValue(name))
}
func (r *Request) FormParams() (params map[string][]string) {
	params = make(map[string][]string)
	mf, err := r.RequestCtx.MultipartForm()
	if err == fasthttp.ErrNoMultipartForm {
		r.PostArgs().VisitAll(func(k, v []byte) {
			params[string(k)] = []string{string(v)}
		})
	} else if err == nil {
		for k, v := range mf.Value {
			if len(v) > 0 {
				params[k] = v
			}
		}
	}
	return
}
func (r *Request) FormFile(name string) (*multipart.FileHeader, error) {
	return r.RequestCtx.FormFile(name)
}