singletons.add(new DatasetProvider());
singletons.add(new OntologyProvider());
singletons.add(new OntClassMatcher());
singletons.add(new SPARQLEndpointProvider());
singletons.add(new SPARQLEndpointOriginProvider());
singletons.add(new GraphStoreProvider());
singletons.add(new GraphStoreOriginProvider());
singletons.add(new SkolemizingRDFPostReader());
singletons.add(new NotFoundExceptionMapper());
singletons.add(new ConstraintViolationExceptionMapper());
singletons.add(new org.graphity.client.mapper.jena.DoesNotExistExceptionMapper());