init --Initializes all the other properties relative to the outputdir.
clean--Cleans up the output directories and the output JAR file.
prepare--Creates the output directories if they do not already exist.
compile--Compiles the Java source files for the model into the build directory defined in the init target. package--Packages the compiled Java source into a JAR file.
all--Runs all the tags. It is the default target of this build project.