project.getGroupId()));
outManifest.addConfiguredAttribute(new Attribute(BuildConstants.ATTR_IMPLEMENTATION_TITLE,
project.getName()));
outManifest.addConfiguredAttribute(new Attribute(BuildConstants.ATTR_SPECIFICATION_TITLE,
project.getName()));
outManifest.addConfiguredAttribute(new Attribute(BuildConstants.ATTR_SPECIFICATION_VERSION,
project.getVersion()));
if ( archiver.getDestFile().getName().endsWith(".jar") && !hasMain) {
outManifest.addConfiguredAttribute(new Attribute(BuildConstants.ATTR_MAIN_CLASS,
BuildConstants.ATTR_VALUE_MAIN_CLASS));