</span>&nbsp;<span class="constructor">Pcty_signature</span>&nbsp;<span class="keyword">of</span>&nbsp;<span class="constructor">Parsetree</span>.class_signature<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">Pcty_arrow</span>&nbsp;<span class="keyword">of</span>&nbsp;<span class="constructor">Asttypes</span>.arg_label&nbsp;*&nbsp;<span class="constructor">Parsetree</span>.core_type&nbsp;*<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="constru