170     pub fn add(&mut self, t: AttrType, v: &[u8]) {  in add()
188         buf[0..2].copy_from_slice(&t.value().to_be_bytes()); // T  in add()
195             typ: t,                 // T  in add()
258     pub fn set_type(&mut self, t: MessageType) {  in set_type()
259         self.typ = t;  in set_type()
279         let t = u16::from_be_bytes([buf[0], buf[1]]); // first 2 bytes  in decode()  localVariable
298         self.typ.read_value(t);  in decode()
385     pub fn contains(&self, t: AttrType) -> bool {  in contains()
387             if a.typ == t {  in contains()
397     pub fn get(&self, t: AttrType) -> Result<Vec<u8>> {  in get()
398         let (v, ok) = self.attributes.get(t);  in get()