default:
    mvn clean compile exec:java
exec args:
    mvn exec:java -Dexec.args={{args}}
clean:
    mvn clean
compile:
    mvn compile
test:
    mvn test
javadoc:
    mvn javadoc:javadoc

_exec class: clean compile
    mvn exec:java -Dexec.mainClass=pp.{{class}}
Starter:
    just _exec Starter
StarterInner:
    just _exec StarterInner
StarterLambda:
    just _exec StarterLambda