Reference: https://freemarker.apache.org/docs/index.html See: https://git.rwth-aachen.de/monticore/EmbeddedMontiArc/generators/EMAM2RosCpp/blob/master/src/main/java/de/monticore/lang/monticar/generator/roscpp/GeneratorRosCpp.java#L69
https://git.rwth-aachen.de/monticore/EmbeddedMontiArc/generators/EMAM2RosCpp/blob/master/src/main/java/de/monticore/lang/monticar/generator/roscpp/template/RosCppTemplates.java
https://git.rwth-aachen.de/monticore/EmbeddedMontiArc/generators/EMAM2RosCpp/tree/master/src/main/resources/de/monticore/lang/monticar/generator/roscpp/template