@Override
	public void addProperties(Properties properties) {
		this.registerPropertySource(properties);
		this.properties.putAll(properties);
		for (Module module : this.modules) {
			module.addProperties(properties);
		}
	}
@author Mark Fisher
@author David Turanski
@author Gary Russell
spring-xd-module/src/main/java/org/springframework/xd/module/core/CompositeModule.java