1 files changed, 2 insertions, 5 deletions
diff --git a/bsfs/triple_store/base.py b/bsfs/triple_store/base.py
index a2668c3..942a16b 100644
--- a/bsfs/triple_store/base.py
+++ b/bsfs/triple_store/base.py
@@ -54,11 +54,7 @@ class TripleStoreBase(abc.ABC):
 
     @classmethod
     @abc.abstractmethod
-    def Open(
-            cls,
-            uri: str,
-            **kwargs: typing.Any,
-            ) -> 'TripleStoreBase':
+    def Open(cls, **kwargs: typing.Any) -> 'TripleStoreBase': # pylint: disable=invalid-name # capitalized classmethod
         """Return a TripleStoreBase instance connected to *uri*."""
 
     @abc.abstractmethod
@@ -75,6 +71,7 @@ class TripleStoreBase(abc.ABC):
         """Return the store's local schema."""
 
     @schema.setter
+    @abc.abstractmethod
     def schema(self, schema: _schema.Schema):
         """Migrate to new schema by adding or removing class definitions.