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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 reset_cooldown(self, ctx):
 """Resets the cooldown on this command. Parameters ctx: :class:`.Context` The invocation context to reset the cooldown under. """

        if self._buckets.valid:
            bucket = self._buckets.get_bucket(ctx.message)
            bucket.reset()