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: extract.rs
    path of file: ./repos/actix-web/actix-web/src
    
    the code of the file until where you have to start completion: //! Request extractors

use std::{
    convert::Infallible,
    future::Future,
    marker::PhantomData,
    pin::Pin,
    task::{Context, Poll},
};

use actix_http::{Method, Uri};
use actix_utils::future::{ok, Ready};
use futures_core::ready;
use pin_project_lite::pin_
    
                fn from_request(req: &HttpRequest, payload: &mut Payload) -> Self::Future {
                    $fut {
                        $(
                            $T: ExtractFuture::Future {
                                fut: $T::from_request(req, payload)
                            },
                        )+
                    }
                }