ref="#pro-methods">Protected functions</a></h2>
          <dl class="m-doc">
            <dt id="a1d1aa93be90ee4553d4d678b7781d85e">
              <span class="m-doc-wrap-bumper">auto <a href="#a1d1aa93be90ee4553d4d678b7781d85e" class="m-doc-self">delta_property</a>(</span><span class="m-doc-wrap">) const -&gt; const Property&amp;</span>
            </dt>
            <dd>Returns how much to add to the property when the action is updated the given number of times.</dd>
            <dt id="a042c085a5730b784fb