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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_space(self):
 """ Imports the domain. """

        assert 'space' in self.config, 'The search space is NOT configured!'
        
        space_config = self.config['space']
        constraint_config = self.config['constraints']
        from ..core.task.space import Design_space
        return Design_space.fromConfig(space_config, constraint_config)