@Test
	public void testFound() {
		ModuleDefinition def = registry.findDefinition("test-source", source);
		assertThat(def, notNullValue());
		assertThat(def, module("test-source", source));
	}
Tests that when at least one delegate has a module, it is found.
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/module/DelegatingModuleRegistryTests.java