make the class appropriately abstract

Author: atulikumwenayo

src/datacustomcode/common_config.py

@@ -12,6 +12,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+from abc import ABC, abstractmethod
 import os
 from typing import Any
 
@@ -48,9 +49,9 @@ class BaseObjectConfig(ForceableConfig):
     )
 
 
-class BaseConfig(BaseModel):
-    def update(self, other: Any) -> "BaseConfig":
-        raise NotImplementedError("Subclasses must implement update method")
+class BaseConfig(ABC, BaseModel):
+    @abstractmethod
+    def update(self, other: Any) -> "BaseConfig": ...
 
     def load(self, config_path: str) -> "BaseConfig":
         """Load configuration from a YAML file and merge with existing config"""