docs: def get(self, id, depth=3, schema=None):
          """ Construct a single object based on its ID. """
          uri = URIRef(id)
          if schema is None:
              for o in self.graph.objects(subject=uri, predicate=RDF.type):
                  schema = self.parent.get_schema(str(o))
                  if schema is not None:
                      break
          else:
              schema = self.parent.get_schema(schema)
          binding = self.get_binding(schema, None)
          return self._objectify(uri, binding, depth=depth, path=set())