/**
* To make it easy to grasp relationship among modules and the module set, we'll align the build
* numbers of all the modules.
*
* <p>This method is invoked from {@link Executor#run()}, and because of the mutual exclusion
* among {@link MavenModuleSetBuild} and {@link MavenBuild}, we can safely touch all the modules.
*/
public synchronized int assignBuildNumber() throws IOException {
// determine the next value
updateNextBuildNumber();
return super.assignBuildNumber();
}
