e_category.NoPres" class="anchor"></a><code>| </code><code><span class="constructor">NoPres</span></code></td></tr><tr id="type-pre_category.Empty" class="anchored"><td class="def constructor"><a href="#type-pre_category.Empty" class="anchor"></a><code>| </code><code><span class="constructor">Empty</span></code></td></tr><tr id="type-pre_category.OnlyAllocation" class="anchored"><td class="def constructor"><a href="#type-pre_category.OnlyAllocation" class="anchor"></a><code>| </code><code><span class="const