1<?php 2 3/** 4 * webtrees: online genealogy 5 * Copyright (C) 2021 webtrees development team 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation, either version 3 of the License, or 9 * (at your option) any later version. 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * You should have received a copy of the GNU General Public License 15 * along with this program. If not, see <https://www.gnu.org/licenses/>. 16 */ 17 18declare(strict_types=1); 19 20namespace Fisharebest\Webtrees\Census; 21 22/** 23 * Definitions for a census 24 */ 25interface CensusInterface extends CensusPlaceInterface 26{ 27 /** 28 * When did this census occur, in GEDCOM format. 29 * 30 * @return string 31 */ 32 public function censusDate(): string; 33 34 /** 35 * The columns of the census. 36 * 37 * @return CensusColumnInterface[] 38 */ 39 public function columns(): array; 40} 41