4.0.0 com.ankurm.langchain4j langchain4j-demo 1.0.0 agentic dev.langchain4j langchain4j dev.langchain4j langchain4j-agentic ${langchain4j.beta.version} org.slf4j slf4j-simple ${slf4j.version} test org.junit.jupiter junit-jupiter test org.assertj assertj-core ${assertj.version} test