nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Pext_decl</span>&nbsp;<span class="keyword">of</span>&nbsp;<span class="constructor">Parsetree</span>.constructor_arguments&nbsp;*<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Parsetree</span>.core_type&nbsp;option<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">Pext_rebind</span>&nbsp;<span class="keyword">of</span>&nbsp;<span class="constructor">Longident</span>.t&nbsp;<spa