in maven-plugin/src/main/scala/org/apache/pekko/grpc/maven/AbstractGenerateMojo.scala [75:81]
def parseLanguage(text: String): Language =
text.toLowerCase match {
case "scala" => Scala
case "java" => Java
case unknown =>
throw new IllegalArgumentException("[" + unknown + "] is not a supported language, supported are java or scala")
}