Implement contains for a few list types

Author: michaelklishin

CHANGELOG.md

@@ -2,7 +2,10 @@
 
 ## v0.50.0 (in development)
 
-No changes yet.
+### Enhancements
+
+ * `responses::TagList`, `responses::PluginList`, `responses::NodeList`, `responses::FeatureFlagList`, `responses::DeprecatedFeatureList`
+   now implement `contains`.
 
 
 ## v0.49.0 (Sep 07, 2025)

src/responses.rs

@@ -52,6 +52,10 @@ impl TagList {
     pub fn is_empty(&self) -> bool {
         self.0.is_empty()
     }
+
+    pub fn contains(&self, key: &str) -> bool {
+        self.0.iter().any(|s| s == key)
+    }
 }
 
 impl IntoIterator for TagList {
@@ -74,6 +78,10 @@ impl PluginList {
     pub fn is_empty(&self) -> bool {
         self.0.is_empty()
     }
+
+    pub fn contains(&self, key: &str) -> bool {
+        self.0.iter().any(|s| s == key)
+    }
 }
 
 impl IntoIterator for PluginList {
@@ -225,6 +233,10 @@ impl NodeList {
     pub fn is_empty(&self) -> bool {
         self.len() == 0
     }
+
+    pub fn contains(&self, key: &str) -> bool {
+        self.0.iter().any(|s| s == key)
+    }
 }
 
 impl IntoIterator for NodeList {
@@ -2297,6 +2309,10 @@ impl FeatureFlagList {
     pub fn is_empty(&self) -> bool {
         self.len() == 0
     }
+
+    pub fn contains(&self, key: &str) -> bool {
+        self.0.iter().any(|ff| ff.name == key)
+    }
 }
 
 impl IntoIterator for FeatureFlagList {
@@ -2394,6 +2410,10 @@ impl DeprecatedFeatureList {
     pub fn is_empty(&self) -> bool {
         self.0.is_empty()
     }
+
+    pub fn contains(&self, key: &str) -> bool {
+        self.0.iter().any(|df| df.name == key)
+    }
 }
 
 impl IntoIterator for DeprecatedFeatureList {