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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 on_rbAggLayerNoAggregation_toggled(self):
 """Unlock the Next button Also, clear any previously set aggregation layer .. note:: This is an automatic Qt slot executed when the radiobutton is activated. """

        self.parent.aggregation_layer = None
        self.parent.pbnNext.setEnabled(True)