fix: provided a default empty list for includeDomains and excludeDomains for the Tavily config

Author: Joshua-Hell

tools/tavily/runtime/src/main/java/io/quarkiverse/langchain4j/tavily/runtime/TavilyConfig.java

@@ -77,13 +77,13 @@ public interface TavilyConfig {
     /**
      * A list of domains to specifically include in the search results. Default is [], which includes all domains.
      */
-    @WithDefault("[]")
-    List<String> includeDomains();
+    @ConfigDocDefault("empty list")
+    Optional<List<String>> includeDomains();
 
     /**
      * A list of domains to specifically exclude from the search results. Default is [], which doesn't exclude any domains.
      */
-    @WithDefault("[]")
-    List<String> excludeDomains();
+    @ConfigDocDefault("empty list")
+    Optional<List<String>> excludeDomains();
 
 }

tools/tavily/runtime/src/main/java/io/quarkiverse/langchain4j/tavily/runtime/TavilyRecorder.java

@@ -1,5 +1,6 @@
 package io.quarkiverse.langchain4j.tavily.runtime;
 
+import java.util.List;
 import java.util.function.Supplier;
 
 import io.quarkiverse.langchain4j.tavily.QuarkusTavilyWebSearchEngine;
@@ -27,8 +28,8 @@ public QuarkusTavilyWebSearchEngine get() {
                         runtimeConfig.getValue().searchDepth(),
                         runtimeConfig.getValue().includeAnswer(),
                         runtimeConfig.getValue().includeRawContent(),
-                        runtimeConfig.getValue().includeDomains(),
-                        runtimeConfig.getValue().excludeDomains());
+                        runtimeConfig.getValue().includeDomains().orElse(List.of()),
+                        runtimeConfig.getValue().excludeDomains().orElse(List.of()));
             }
         };
     }