perf: skip iterating over empty list

src/main/java/dev/openfeature/sdk/HookSupport.java

@@ -45,6 +45,9 @@ public void setHooks(
 
     private static void addFilteredHooks(
             List<Pair<Hook, HookContext>> dest, Collection<Hook> source, FlagValueType type) {
+        if (source.isEmpty()) {
+            return;
+        }
         for (Hook hook : source) {
             if (hook.supportsFlagValueType(type)) {
                 dest.add(Pair.of(hook, null));

src/test/java/dev/openfeature/sdk/HookSupportTest.java

@@ -14,6 +14,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.concurrent.ConcurrentLinkedQueue;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
@@ -161,6 +162,37 @@ void shouldOrderHooksBySource() {
                 .containsExactly(providerHook, optionHook, clientHook, apiHook);
     }
 
+    @Test
+    @DisplayName("empty ConcurrentLinkedQueue sources produce no hooks")
+    void emptyQueueSourcesProduceNoHooks() {
+        var hookSupportData = new HookSupportData();
+        hookSupport.setHooks(
+                hookSupportData,
+                new ConcurrentLinkedQueue<>(),
+                new ConcurrentLinkedQueue<>(),
+                new ConcurrentLinkedQueue<>(),
+                new ConcurrentLinkedQueue<>(),
+                FlagValueType.STRING);
+        assertThat(hookSupportData.getHooks()).isEmpty();
+    }
+
+    @Test
+    @DisplayName("non-empty ConcurrentLinkedQueue source is not skipped")
+    void nonEmptyQueueSourceIsNotSkipped() {
+        Hook<?> hook = mockGenericHook();
+        var queue = new ConcurrentLinkedQueue<Hook>();
+        queue.add(hook);
+        var hookSupportData = new HookSupportData();
+        hookSupport.setHooks(
+                hookSupportData,
+                new ConcurrentLinkedQueue<>(),
+                new ConcurrentLinkedQueue<>(),
+                queue,
+                new ConcurrentLinkedQueue<>(),
+                FlagValueType.STRING);
+        assertThat(hookSupportData.getHooks()).extracting(Pair::getKey).containsExactly(hook);
+    }
+
     @Test
     void hookThatReturnsTheGivenContext_doesNotResultInAStackOverflow() {
         var hookSupportData = new HookSupportData();