   <dl class="header">
        <dt>description</dt>
        <dd>It adds/subtracts _temporalDurationLike_ to/from _temporalDate_, returning a point in time that is in the future/past relative to _temporalDate_.</dd>
      </dl>
      <emu-alg>
        1. Let _calendar_ be _temporalDate_.[[Calendar]].
        1. Let _duration_ be ? ToTemporalDuration(_temporalDurationLike_).
        1. If _operation_ is ~subtract~, set _duration_ to CreateNegatedTemporalDuration(_duration_).
        1. Let _dateDuration_ be T