def _generate_union_tag_property(self, union):
self.emit_wrapped_text(<EOL>'<STR_LIT>',<EOL>prefix=comment_prefix)<EOL>self.emit(<EOL>fmt_property_str(<EOL>prop='<STR_LIT>', typ='<STR_LIT:{}>'.format(fmt_enum_name('<STR_LIT>', union))))<EOL>self.emit()<EOL>
Emits union instance property representing union state.