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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_function_from_bot_intent_trigger(self, event):
 """ For the given event build ARN and return the configured function """

        intent = event.get('currentIntent')
        if intent:
            intent = intent.get('name')
            if intent:
                return self.settings.AWS_BOT_EVENT_MAPPING.get(
                    "{}:{}".format(intent, event.get('invocationSource'))
                )