1	<?php
2
3	declare(strict_types=1);
4
5	namespace Drupal\display_builder;
6
7	/**
8	* Provides an interface defining a display builder instance entity type.
9	*/
10	interface PublishableInterface {
11
12	/**
13	* Check display has required context, meaning it can save value.
14	*
15	* @return bool
16	*   True if required, False otherwise.
17	*/
18	public function isPublishable(): bool;
19
20	/**
21	* If display builder has been saved.
22	*
23	* @return bool
24	*   Has save data.
25	*/
26	public function isPublished(): bool;
27
28	/**
29	* The save value is the current value of display builder.
30	*
31	* @return bool
32	*   The save is the current or not.
33	*/
34	public function isPublishedPresent(): bool;
35
36	/**
37	* Get the hash of the published data.
38	*
39	* @return ?int
40	*   The hash of the published data. NULL if the display has never been
41	*    published.
42	*/
43	public function getPublishedHash(): ?int;
44
45	/**
46	* Get the time of the published data.
47	*
48	* @return ?int
49	*   The timestamp of the published data. NULL if the display has never been
50	*    published.
51	*/
52	public function getPublishedTime(): ?int;
53
54	/**
55	* Publish current state.
56	*/
57	public function publish(): void;
58
59	/**
60	* Restore to the last published state.
61	*/
62	public function restore(): void;
63
64	}

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