FIX: Reverted some changes.

src/linkahead/common/models.py

@@ -338,6 +338,17 @@ class Entity:
     def file(self, new_file):
         self.__file = new_file
 
+    # FIXME Add test.
+    @property   # getter for _cuid
+    def cuid(self):
+        # Set if None?
+        return self._cuid
+
+    # FIXME Add test.
+    @property   # getter for _flags
+    def flags(self):
+        return self._flags.copy()   # for dict[str, str] shallow copy is enough
+
     def grant(
         self,
         realm: Optional[str] = None,