assertFalse(schemaContext.findModule("foo", Revision.of("2016-08-21")).isPresent());
assertFalse(schemaContext.findModule(URI.create("foo-namespace"), Revision.of("2016-08-21")).isPresent());
assertFalse(schemaContext.findModule("foo", Revision.of("2016-08-21")).isPresent());
assertFalse(schemaContext.findModule(URI.create("foo-namespace"), Revision.of("2016-08-21")).isPresent());