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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 _process_foreign_keys(cls, foreign_keys, node_data):
 """For each foreign key try to load the actual object so load_bulk doesn't fail trying to load an int where django expects a model instance """

        for key in foreign_keys.keys():
            if key in node_data:
                node_data[key] = foreign_keys[key].objects.get(
                    pk=node_data[key])