def describe(
        self,
        timeframe: TimeFrameLiteral,
        delta: Union[int, float] = 0,
        only_distance: bool = False,
    ) -> str:
        """Describes a delta within a timeframe in plain language.

        :param timeframe: a string representing a timeframe.
        :param delta: a quantity representing a delta in a timeframe.
        :param only_distance: return only distance eg: "11 seconds" without "in" or "ago" keywords
        """

        humanized = super().describe(timeframe, delta, only_distance)
        if only_distance and timeframe == "now":
            humanized = "instantly"

        return humanized
Describes a delta within a timeframe in plain language.

        :param timeframe: a string representing a timeframe.
        :param delta: a quantity representing a delta in a timeframe.
        :param only_distance: return only distance eg: "11 seconds" without "in" or "ago" keywords
        
arrow/locales.py