lt in a incoherent LTS description. This function should essentially be viewed as a variant of <code>map_label</code> in which the transformation function <code>f</code> can take the source and destination state into account.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-clean"><a href="#val-clean" class="anchor"></a><code><span><span class="keyword">val</span> clean : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-t">t</a></span></c