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: network_buffered_stream.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::futures::future::poll_fn;
use deno_core::futures::ready;
use std::io;
use std::mem::MaybeUninit;
use std::pin::Pin;
use std::task::Poll;
use tokio::io::A
    
  fn current_slice(&self) -> &[u8] {
    // We trust that these bytes are initialized properly
    let slice = &self.prefix[self.prefix_offset..self.initialized_len];

    // This guarantee comes from slice_assume_init_ref (we can't use that until it's stable)

    // SAFETY: casting `slice` to a `*const [T]` is safe since the caller guarantees that
    // `slice` is initialized, and `MaybeUninit` is guaranteed to have the same layout as `T`.
    // The pointer obtained is valid since it refers to memory owned by `slice` which is a
    // reference and thus guaranteed to be valid for reads.

    unsafe { &*(slice as *const [_] as *const [u8]) as _ }
  }