ype&nbsp;list<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">Pcstr_record</span>&nbsp;<span class="keyword">of</span>&nbsp;<span class="constructor">Parsetree</span>.label_declaration&nbsp;list<br>
&nbsp;&nbsp;<span class="keyword">and</span>&nbsp;type_extension&nbsp;=&nbsp;{<br>
&nbsp;&nbsp;&nbsp;&nbsp;ptyext_path&nbsp;:&nbsp;<span class="constructor">Longident</span>.t&nbsp;<span class="constructor">Asttypes</span>.loc;<br>
&nbsp;&nbsp;&nbsp;&nbsp;ptyext_para