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    use std::io;
    use futures::{Future, Poll};
    use tokio_io::AsyncWrite;
    use tokio_io::io::{WriteAll, write_all};
    use message::Message;

    pub fn write_message<M, A>(a: A, message: Message<M>) -> WriteMessage<M, A> where A: AsyncWrite {
    	WriteMessage {
    		future: write_all(a, message),
    	}
    }

    pub struct WriteMessage<M, A> {
    	future: WriteAll<A, Message<M>>,
    }

    impl<M, A> Future for WriteMessage<M, A> where A: AsyncWrite {
    	type Item = (A, Message<M>);
    	type Error = io::Error;

    	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
    		self.future.poll()
    	}
    }

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