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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 set_current_state(self):
 """"Helper to set the state of the step from current keywords."""

        if not self.thresholds:
            self.thresholds = self.parent.get_existing_keyword('thresholds')
        if not self.value_maps:
            self.value_maps = self.parent.get_existing_keyword('value_maps')