fix: align baggage.remove() implementation (#2734)

Author: gruebel

opentelemetry/CHANGELOG.md

@@ -9,6 +9,7 @@
 - Bug Fix: `InstrumentationScope` implementation for `PartialEq` and `Hash` fixed to include Attributes also.
 - *Breaking* Changed value type of `Baggage` from `Value` to `StringValue`
 - Updated `Baggage` constants to reflect latest standard (`MAX_KEY_VALUE_PAIRS` - 180 -> 64, `MAX_BYTES_FOR_ONE_PAIR` - removed) and increased insert performance see #[2284](https://github.com/open-telemetry/opentelemetry-rust/pull/2284).
+- *Breaking* Align `Baggage.remove()` signature with `.get()` to take the key as a reference
 
 ## 0.28.0
 

opentelemetry/src/baggage.rs

@@ -193,8 +193,8 @@ impl Baggage {
 
     /// Removes a name from the baggage, returning the value
     /// corresponding to the name if the pair was previously in the map.
-    pub fn remove<K: Into<Key>>(&mut self, key: K) -> Option<(StringValue, BaggageMetadata)> {
-        self.inner.remove(&key.into())
+    pub fn remove<K: AsRef<str>>(&mut self, key: K) -> Option<(StringValue, BaggageMetadata)> {
+        self.inner.remove(key.as_ref())
     }
 
     /// Returns the number of attributes for this baggage
@@ -584,4 +584,25 @@ mod tests {
         assert!(b.insert("c", StringValue::from("..")).is_none()); // exceeds MAX_LEN_OF_ALL_PAIRS
         assert_eq!(b.insert("c", StringValue::from("!")).unwrap(), ".".into()); // replaces existing
     }
+
+    #[test]
+    fn test_crud_operations() {
+        let mut baggage = Baggage::default();
+        assert!(baggage.is_empty());
+
+        // create
+        baggage.insert("foo", "1");
+        assert_eq!(baggage.len(), 1);
+
+        // get
+        assert_eq!(baggage.get("foo"), Some(&StringValue::from("1")));
+
+        // update
+        baggage.insert("foo", "2");
+        assert_eq!(baggage.get("foo"), Some(&StringValue::from("2")));
+
+        // delete
+        baggage.remove("foo");
+        assert!(baggage.is_empty());
+    }
 }