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: request_body.rs
    path of file: ./repos/deno/ext/http
    
    the code of the file until where you have to start completion: // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use bytes::Bytes;
use deno_core::error::AnyError;
use deno_core::futures::stream::Peekable;
use deno_core::futures::Stream;
use deno_core::futures::StreamExt;
use deno_core::AsyncRefCell;
use deno_core::AsyncResult;
use deno_core::BufView;
use deno_core::RcRef;
use deno_core::Resource;
use hyper::body::Body;
use hyper::body::Incoming;
use hyper::body::SizeHint;
use std::borrow::Cow;
use std::pin::Pin;
use std::rc::Rc;
use std::task::ready;
use std::task::Poll;


    
  async fn read(self: Rc<Self>, limit: usize) -> Result<BufView, AnyError> {
    let peekable = RcRef::map(self, |this| &this.0);
    let mut peekable = peekable.borrow_mut().await;
    match Pin::new(&mut *peekable).peek_mut().await {
      None => Ok(BufView::empty()),
      Some(Err(_)) => Err(peekable.next().await.unwrap().err().unwrap()),
      Some(Ok(bytes)) => {
        if bytes.len() <= limit {
          // We can safely take the next item since we peeked it
          return Ok(BufView::from(peekable.next().await.unwrap()?));
        }
        let ret = bytes.split_to(limit);
        Ok(BufView::from(ret))
      }
    }
  }