MetadataBuildAction action = buildByNumber.getAction(MetadataBuildAction.class);
if (action != null) {
container = action;
} else if (createContainer) {
action = new MetadataBuildAction();
buildByNumber.addAction(action);
container = action;
} else {
throw new NoMetadataException("Build #" + build + " of job "
+ job + " has no associated metadata.");
}