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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\install;
/**
* Interface for installer modules
*
* An installer module is a task collection which executes installer tasks.
*/
interface module_interface
{
/**
* Checks if the execution of the module is essential to install phpBB or it can be skipped
*
* Note: Please note that all the non-essential modules have to implement check_requirements()
* method.
*
* @return bool true if the module is essential, false otherwise
*/
public function is_essential();
/**
* Checks requirements for the tasks
*
* Note: Only need to be implemented for non-essential tasks, as essential tasks
* requirements should be checked in the requirements install module.
*
* @return bool true if the task's requirements are met
*/
public function check_requirements();
/**
* Executes the task
*
* @return null
*/
public function run();
/**
* Returns the number of tasks in the module
*
* @return int
*/
public function get_step_count();
/**
* Returns an array to the correct navigation stage
*
* @return array
*/
public function get_navigation_stage_path();
}
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