The @nullable is not applicable for the primitive type void

Author: tzolov

spring-ai-core/src/main/java/org/springframework/ai/vectorstore/observation/AbstractObservationVectorStore.java

@@ -18,7 +18,6 @@
 
 import java.util.List;
 import java.util.Optional;
-import java.util.stream.Collectors;
 
 import io.micrometer.observation.ObservationRegistry;
 
@@ -150,7 +149,6 @@ public List<Document> similaritySearch(SearchRequest request) {
 	 * logic.
 	 * @param filterExpression Filter expression to identify documents to delete
 	 */
-	@Nullable
 	protected void doDelete(Filter.Expression filterExpression) {
 		// this is temporary until we implement this method in all concrete vector stores,
 		// at which point