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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 _load_income_model(self):
 """Reloads the income model directly from the state"""

        if not self.state_copy_initialized:
            return
        self.income = None
        income_m = deepcopy(self.state_copy.income)
        income_m.parent = self
        income_m.income = income_m.income
        self.income = income_m