OptionalcoordinatesOptionalexclusionsList of dependences to exclude. For example: ["slf4j:slf4j", "*:hadoop-client"].
Maven dependency exclusions: https://maven.apache.org/guides/introduction/introduction-to-optional-and-excludes-dependencies.html.
OptionalrepoMaven repo to install the Maven package from. If omitted, both Maven Central Repository and Spark Packages are searched.
Gradle-style maven coordinates. For example: "org.jsoup:jsoup:1.7.2".