49     type Error;  typedef
63     fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;  in poll_ready()  argument
84     fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error>;  in start_send()  argument
98     fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;  in poll_flush()  argument
111     fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>;  in poll_close()  argument
115     type Error = S::Error;  typedef
117     fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_ready()  argument
121     fn start_send(mut self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {  in start_send()  argument
125     fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_flush()  argument
129     fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_close()  argument
139     type Error = <P::Target as Sink<Item>>::Error;  typedef
141     fn poll_ready(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_ready()  argument
145     fn start_send(self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {  in start_send()  argument
149     fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_flush()  argument
153     fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_close()  argument
164         type Error = Never;  typedef
166         fn poll_ready(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_ready()  argument
170         fn start_send(self: Pin<&mut Self>, item: T) -> Result<(), Self::Error> {  in start_send()  argument
176         fn poll_flush(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_flush()  argument
180         fn poll_close(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_close()  argument
186         type Error = Never;  typedef
188         fn poll_ready(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_ready()  argument
192         fn start_send(self: Pin<&mut Self>, item: T) -> Result<(), Self::Error> {  in start_send()  argument
198         fn poll_flush(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_flush()  argument
202         fn poll_close(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_close()  argument
208         type Error = S::Error;  typedef
210 …   fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_ready()  argument
214         fn start_send(mut self: Pin<&mut Self>, item: Item) -> Result<(), Self::Error> {  in start_send()  argument
218 …   fn poll_flush(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_flush()  argument
222 …   fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {  in poll_close()  argument