CII Best practice passing badge requires each component to enable one or more compiler warning flags, a "safe" language mode, or use a separate "linter" tool to look for code quality errors or common simple mistakes.

maven-checkstyle-plugin warning reported in the build need to be addressed

[https://jenkins.onap.org/view/dcagen2/job/dcaegen2-services-mapper-master-release-version-java-daily/357/consoleFull|https://jenkins.onap.org/view/dcagen2/job/dcaegen2-services-mapper-master-release-version-java-daily/357/consoleFull[]