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<?php
namespace Drupal\workflows;
/**
* A transition value object that describes the transition between two states.
*
* @internal
* The TransitionInterface should only be used by Workflows and Content
* Moderation.
*
* @todo Revisit the need for this in https://www.drupal.org/node/2902309.
*/
interface TransitionInterface {
/**
* The key of the transition plugin form.
*/
const PLUGIN_FORM_KEY = 'transition';
/**
* The transition direction from.
*/
const DIRECTION_FROM = 'from';
/**
* The transition direction to.
*/
const DIRECTION_TO = 'to';
/**
* Gets the transition's ID.
*
* @return string
* The transition's ID.
*/
public function id();
/**
* Gets the transition's label.
*
* @return string
* The transition's label.
*/
public function label();
/**
* Gets the transition's from states.
*
* @return \Drupal\workflows\StateInterface[]
* The transition's from states.
*/
public function from();
/**
* Gets the transition's to state.
*
* @return \Drupal\workflows\StateInterface
* The transition's to state.
*/
public function to();
/**
* Gets the transition's weight.
*
* @return string
* The transition's weight.
*/
public function weight();
}
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