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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_view_selection(self):
 """Get actual tree selection object and all respective models of selected rows"""

        if not self.MODEL_STORAGE_ID:
            return None, None

        # avoid selection requests on empty tree views -> case warnings in gtk3
        if len(self.store) == 0:
            paths = []
        else:
            model, paths = self._tree_selection.get_selected_rows()

        # get all related models for selection from respective tree store field
        selected_model_list = []
        for path in paths:
            model = self.store[path][self.MODEL_STORAGE_ID]
            selected_model_list.append(model)
        return self._tree_selection, selected_model_list