bonsai - fix ifcsqlite import (546a042)

src/ifcopenshell-python/ifcopenshell/stream.py

@@ -294,6 +294,10 @@ try:
                 f"No `wrapped_data` for {class_name}. `ifcopenshell.{class_name}` is probably confused with `ifcopenshell.file`."
             )
 
+        @property
+        def header(self) -> NoReturn:
+            raise NotImplementedError("`stream.header` is not implemented yet.")
+
         @property
         def schema(self) -> ifcopenshell.util.schema.IFC_SCHEMA:
             return self._schema