title: Pharo Metalink not works on #ifTrue: send node
body: <p>When I add MetaLink to all send nodes in the following code, the Metalink on <code>#ifTrue:</code> not works:</p>
  
  <pre><code>aMethod
      10 = 11
          ifTrue: [ ^ 3 ]
  </code></pre>
  
  <p>code to add MetaLinks:</p>
  
  <pre><code>ast sendNodes do: [ :n | 
              n link: (MetaLink new
                          metaObject: [ :node | 
                              Transcript show: node asString; cr ];
                          arguments: #(node);
                          selector: #value:;
                          control: #before;
                          yourself) ]
  </code></pre>
  
  <p>Can anyone explain why this happens?
  How can I add a MetaLink on a <code>#ifTrue:</code> send?</p>