docs: function do_insert(self, ObjType, data) {
  	return nr_fcall("nopg:do_insert", function() {
  		return prepare_insert_query(self, ObjType, data).then(function(q) {
  			var result = q.compile();
  			return do_query(self, result.query, result.params);
  		});
  	});
  }