eter">S</span>&gt;</span> class 
    <a href="https://dart.dev/null-safety" class="feature feature-null-safety" title="Supports the null safety language feature.">Null safety</a>
 
</h1></div>

    
<section class="desc markdown">
  <p>Handles the evaluation of a single property given an animation state machine instance</p>
</section>


    <section>
      <dl class="dl-horizontal">
        
  <dt>Inheritance</dt>
  <dd>
    <ul class="gt-separated dark clazz-relationships">
      <li><a href="https://api.f