Move Event cancellable parts to trait

src/pocketmine/event/block/BlockBreakEvent.php

@@ -25,6 +25,7 @@ namespace pocketmine\event\block;
 
 use pocketmine\block\Block;
 use pocketmine\event\Cancellable;
+use pocketmine\event\CancellableTrait;
 use pocketmine\item\Item;
 use pocketmine\Player;
 
@@ -32,6 +33,8 @@ use pocketmine\Player;
  * Called when a player destroys a block somewhere in the world.
  */
 class BlockBreakEvent extends BlockEvent implements Cancellable{
+	use CancellableTrait;
+
 	/** @var Player */
 	protected $player;
 

src/pocketmine/event/block/BlockBurnEvent.php

@@ -25,11 +25,14 @@ namespace pocketmine\event\block;
 
 use pocketmine\block\Block;
 use pocketmine\event\Cancellable;
+use pocketmine\event\CancellableTrait;
 
 /**
  * Called when a block is burned away by fire.
  */
 class BlockBurnEvent extends BlockEvent implements Cancellable{
+	use CancellableTrait;
+
 	/** @var Block */
 	private $causingBlock;
 

src/pocketmine/event/block/BlockGrowEvent.php

@@ -25,11 +25,14 @@ namespace pocketmine\event\block;
 
 use pocketmine\block\Block;
 use pocketmine\event\Cancellable;
+use pocketmine\event\CancellableTrait;
 
 /**
  * Called when plants or crops grow.
  */
 class BlockGrowEvent extends BlockEvent implements Cancellable{
+	use CancellableTrait;
+
 	/** @var Block */
 	private $newState;
 

src/pocketmine/event/block/BlockPlaceEvent.php

@@ -25,6 +25,7 @@ namespace pocketmine\event\block;
 
 use pocketmine\block\Block;
 use pocketmine\event\Cancellable;
+use pocketmine\event\CancellableTrait;
 use pocketmine\item\Item;
 use pocketmine\Player;
 
@@ -32,6 +33,8 @@ use pocketmine\Player;
  * Called when a player places a block
  */
 class BlockPlaceEvent extends BlockEvent implements Cancellable{
+	use CancellableTrait;
+
 	/** @var Player */
 	protected $player;
 

src/pocketmine/event/block/BlockUpdateEvent.php

@@ -24,10 +24,11 @@ declare(strict_types=1);
 namespace pocketmine\event\block;
 
 use pocketmine\event\Cancellable;
+use pocketmine\event\CancellableTrait;
 
 /**
  * Called when a block tries to be updated due to a neighbor change
  */
 class BlockUpdateEvent extends BlockEvent implements Cancellable{
-
+	use CancellableTrait;
 }

src/pocketmine/event/block/LeavesDecayEvent.php

@@ -24,10 +24,11 @@ declare(strict_types=1);
 namespace pocketmine\event\block;
 
 use pocketmine\event\Cancellable;
+use pocketmine\event\CancellableTrait;
 
 /**
  * Called when leaves decay due to not being attached to wood.
  */
 class LeavesDecayEvent extends BlockEvent implements Cancellable{
-
+	use CancellableTrait;
 }

src/pocketmine/event/block/SignChangeEvent.php

@@ -25,6 +25,7 @@ namespace pocketmine\event\block;
 
 use pocketmine\block\Block;
 use pocketmine\event\Cancellable;
+use pocketmine\event\CancellableTrait;
 use pocketmine\Player;
 use function count;
 
@@ -32,6 +33,8 @@ use function count;
  * Called when a sign is changed by a player.
  */
 class SignChangeEvent extends BlockEvent implements Cancellable{
+	use CancellableTrait;
+
 	/** @var Player */
 	private $player;
 	/** @var string[] */