;<span class="constructor">Pcf_val</span>&nbsp;<span class="keyword">of</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(<span class="constructor">Asttypes</span>.label&nbsp;<span class="constructor">Asttypes</span>.loc&nbsp;*&nbsp;<span class="constructor">Asttypes</span>.mutable_flag&nbsp;*<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Parsetree</span>.class_field_kind)<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constru