public static Collection<ResourceFile> getApplicationRootDirectories() {
		checkAppInitialized();
		return app.layout.getApplicationRootDirs();
	}
Returns a list of the application root directories.  An application root directory is a
directory containing one or more modules.  Applications support multiple application root
directories so that it can contain modules that don't have a common file system root.  This
is useful if the application contains modules from more than one source code repository.
Application roots are returned in the order they appear in the classpath.
@return a list of root directories containing modules for this application.
Ghidra/Framework/Generic/src/main/java/ghidra/framework/Application.java