ield anchored"><a href="#type-simple_expression.body" class="anchor"></a><code><span>body : <a href="#type-expression">expression</a>;</span></code></li></ol><code><span>}</span></code></li><li id="type-simple_expression.Nil" class="def variant constructor anchored"><a href="#type-simple_expression.Nil" class="anchor"></a><code><span>| </span><span><span class="constructor">Nil</span></span></code></li><li id="type-simple_expression.Receive" class="def variant constructor anchored"><a href="#type-simple_exp