DifferenceEngineShowEmptyOldContentHook.php
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DifferenceEngineShowEmptyOldContentHook.php
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	<?php

	namespace MediaWiki\Diff\Hook;

	use DifferenceEngine;

	/**
	* This is a hook handler interface, see docs/Hooks.md.
	* Use the hook name "DifferenceEngineShowEmptyOldContent" to register handlers implementing this interface.
	*
	* @stable to implement
	* @ingroup Hooks
	*/
	interface DifferenceEngineShowEmptyOldContentHook {
	/**
	* Use this hook to change the diff table body (without header) in cases when there is
	* no old revision or the old and new revisions are identical.
	*
	* @since 1.35
	*
	* @param DifferenceEngine $differenceEngine
	* @return bool\|void True or no return value to continue or false to abort
	*/
	public function onDifferenceEngineShowEmptyOldContent( $differenceEngine );
	}