[ENH] add save and load method to ABLModel

abl/learning/abl_model.py

@@ -101,6 +101,20 @@ class ABLModel:
         data_X, _ = self.merge_data(X)
         data_Y, _ = self.merge_data(Y)
         return self.classifier_list[0].fit(X=data_X, y=data_Y)
+    
+    def save(self, *args, **kwargs) -> None:
+        _model = self.classifier_list[0]
+        if hasattr(_model, "save"):
+            self._model.save(*args, **kwargs)
+        else:
+            raise NotImplementedError(f"{type(_model).__name__} object dosen't have the save method")
+        
+    def load(self, *args, **kwargs):
+        _model = self.classifier_list[0]
+        if hasattr(_model, "load"):
+            _model.load(*args, **kwargs)
+        else:
+            raise NotImplementedError(f"{type(_model).__name__} object dosen't have the load method")
 
     @staticmethod
     def merge_data(X):