code: private function changeBlockSlotAndName($targetFile, $blockName, $slotName)
      {
          $block = json_decode(FilesystemTools::readFile($targetFile), true);
          $block["name"] = $blockName;
          $block["slot_name"] = $slotName;
          $json = json_encode($block);
          FilesystemTools::writeFile($targetFile, $json);
  
          return $block;
      }
docs: Changes the block and slot name when moving to another slot
  
  @param string $targetFile
  @param string $blockName
  @param string $slotName
  
  @return array The new block