Trying to build the current wildfly master by calling upon build.bat has failed due to missing mvn.cmd file.
In order to be able to trigger the build process, the build.bat script had to be corrected on the following line:
The script that is found on my current wildfly\ directory is called:
mvnw.cmd and not mvn.cmd
I would also suggest that in some documentation people are recommended to tune their maven settings and add in the repository: