Get All tiles

How to get all tiles in world.
Here is my sample code

PHP:

foreach($this->getServer()->getWorldManager()->getDefaultWorld()->getTiles() as $tile){
}

But it gives me an error about the method, but I can't find the method for getting tiles.

 

Why u need get tiles?

 

To make a plugin on the plates

 

PHP:

foreach($this->getServer()->getWorldManager()->getDefaultWorld()->getLoadedChunks() as $chunk){
  foreach($chunk->getTiles() as $tile){

  }
}