28 pub type Attributes = HashMap<usize, usize>;
82     async fn write(&self, pkt: &rtp::packet::Packet, attributes: &Attributes) -> Result<usize>;  in write()  argument
89         ) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + Sync>>)
98     async fn write(&self, pkt: &rtp::packet::Packet, attributes: &Attributes) -> Result<usize> {  in write()  argument
107     async fn read(&self, buf: &mut [u8], attributes: &Attributes) -> Result<(usize, Attributes)>;  in read()  argument
114         ) -> Pin<Box<dyn Future<Output = Result<(usize, Attributes)>> + Send + Sync>>)
123     async fn read(&self, buf: &mut [u8], attributes: &Attributes) -> Result<(usize, Attributes)> {  in read()  argument
136     ) -> Result<usize>;  in write()  argument
143         ) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + Sync>>)
157     ) -> Result<usize> {  in write()  argument
166     async fn read(&self, buf: &mut [u8], attributes: &Attributes) -> Result<(usize, Attributes)>;  in read()  argument
173         ) -> Pin<Box<dyn Future<Output = Result<(usize, Attributes)>> + Send + Sync>>)
183     async fn read(&self, buf: &mut [u8], attributes: &Attributes) -> Result<(usize, Attributes)> {  in read()  argument