/**
  * Get the closed SpoutBackpack inventory of a player.
  *
  * @param player The player you want to get the inventory.
  * @return inventory The SpoutBackpack inventory of this player.
  */
 public Inventory getClosedSpoutBackpack(Player player) {
   return BITBackpack.getClosedBackpack(player);
 }
 /**
  * Set the closed SpoutBackpack inventory of a player.
  *
  * @param player The player you want to set the inventory.
  * @param inventory The SpoutBackpack inventory of this player.
  */
 public void setClosedSpoutBackpack(Player player, Inventory inventory) {
   BITBackpack.setClosedBackpack(player, inventory);
   return;
 }
 /**
  * Return if or not the player's Backpack is open.
  *
  * @param player The player you want to get the inventory.
  * @return open Player's Backpack opened or not.
  */
 public boolean isOpenSpoutBackpack(Player player) {
   return BITBackpack.isOpenBackpack(player);
 }