n class="punctuation">)</span><span class="punctuation">;</span>
<span class="comment">// -> 'petSpecies relationship (to dog) changed'</span>
<span class="comment">// -> ['fido', 'toto']</span>
<span class="comment">// -> 'petSpecies relationship (to wolf) changed'</span>
<span class="comment">// -> ['cujo']</span>
<span class="comment">// -> 'petColor relationship (to brown) changed'</span>
<span class="comment">// -> ['fido']</span>
<span class="comment">// -> 'petColor relationship (to grey) changed'</s