pocketmine\level\generator\biome\Biome::getName PHP Method

    public abstract function getName();

 /**
  * Changes the biome of a plot
  *
  * @api
  * @param Plot $plot
  * @param Biome $biome
  * @return bool
  */
 public function setPlotBiome(Plot $plot, Biome $biome)
 {
     $plotLevel = $this->getLevelSettings($plot->levelName);
     if ($plotLevel === null) {
         return false;
     }
     $level = $this->getServer()->getLevelByName($plot->levelName);
     $pos = $this->getPlotPosition($plot);
     $plotSize = $plotLevel->plotSize;
     $xMax = $pos->x + $plotSize;
     $zMax = $pos->z + $plotSize;
     $chunkIndexes = [];
     for ($x = $pos->x; $x < $xMax; $x++) {
         for ($z = $pos->z; $z < $zMax; $z++) {
             $index = Level::chunkHash($x >> 4, $z >> 4);
             if (!in_array($index, $chunkIndexes)) {
                 $chunkIndexes[] = $index;
             }
             $color = $biome->getColor();
             $R = $color >> 16;
             $G = $color >> 8 & 0xff;
             $B = $color & 0xff;
             $level->setBiomeColor($x, $z, $R, $G, $B);
         }
     }
     foreach ($chunkIndexes as $index) {
         Level::getXZ($index, $X, $Z);
         $chunk = $level->getChunk($X, $Z);
         foreach ($level->getChunkPlayers($X, $Z) as $player) {
             $player->onChunkChanged($chunk);
         }
     }
     $plot->biome = $biome->getName();
     $this->dataProvider->savePlot($plot);
     return true;
 }