/** Displays the GUI for editing a sign. Args: tileEntitySign */
 public void displayGUIEditSign(TileEntity p_146100_1_) {
   if (p_146100_1_ instanceof TileEntitySign) {
     ((TileEntitySign) p_146100_1_).func_145912_a(this);
     this.playerNetServerHandler.sendPacket(
         new S36PacketSignEditorOpen(p_146100_1_.xCoord, p_146100_1_.yCoord, p_146100_1_.zCoord));
   }
 }