4.0.0 com.example.spring.ai spring-ai-examples-parent 0.0.1-SNAPSHOT pom https://github.com/spring-projects/spring-ai Spring AI Building AI applications with Spring Boot models/chat/helloworld agents/reflection kotlin/kotlin-hello-world kotlin/kotlin-function-callback kotlin/rag-with-kotlin misc/spring-ai-java-function-callback misc/openai-streaming-response