4.0.0 org.apache.tuscany.sca tuscany-samples 2.0-Beta2-SNAPSHOT ../../../pom.xml sample-implementation-java-calculator-async-contribution Apache Tuscany SCA Sample implementation.java Calculator Async Contribution org.apache.tuscany.sca tuscany-sca-api 2.0-Beta2-SNAPSHOT junit junit 4.8.1 test ${project.artifactId} org.apache.tuscany.maven.plugins maven-tuscany-plugin 2.0-Beta2-SNAPSHOT