private Source createSource(ResourceRef resourceRef) {
		return Source.forResourceRef(resourceRef,
				it -> PropertiesValueResolver.replaceProperties(it, getContextProperties()));

	}
This class constructs a <code>Project</code>. It uses the options given by
the user on the command line or things that are part of the user's
environment.
src/main/java/dev/jbang/source/ProjectBuilder.java