code: public static void addProjectAsModule(File pom, String relativePath, String profileId, Log logger) throws IOException, XmlPullParserException {
  		if (relativePath == null) return;
  
  		Model model = getModelFromPOM(pom, logger);
  
  		relativePath = relativePath.replace("\\", "/");
  
  		if (profileId != null && !profileId.isEmpty()) {
  			Profile p = getProfile(model, profileId);
  			if (p != null) {
  				p.addModule(relativePath);
  			}
  		} else {
  			model.addModule(relativePath);
  		}
  		
  		writeModelToPOM(model, pom, logger);
  	}
docs: Add a project as a module.
  
  @param pom
  @param relativePath
  @param logger
  @throws IOException
  @throws XmlPullParserException