def Invalidate(self):
    self.invalidated = True
Returns the sum of the costs the SumOfCosts instance was given at
dataset/ETHPy150Open google/closure-linter/closure_linter/statetracker.py/DocComment.Invalidate--crossover with--dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/costs/cost.py/SumOfCosts.expr