structure :
     - "B A B A * A B A B"
      - ". . . . . . . . ."
      - ". . . . . . . . ."
      - "B B B < X > B B B"
    recipe:
      "*":
        icon : PLAYER_HEAD
        icon_amount : 1
        icon_model_data : 3
        function : PLAYER
        display_name : '&7 %player%'
        lore :
         - "Current rank %rank%"
          - "..."
          - "..."
      # Fill the empty space with a material
      ".":
        icon : AIR
        function : RANK
      # You can use as a material
      "A":
        icon : BLACK_STAINED_GLASS_PANE
        function : DECORATIVE
      # You can also not define a function, default will be DECORATIVE
      "B" : WHITE_STAINED_GLASS_PANE
      "X":
        icon : REDSTONE
        function : CLOSE
      # You can use as an item with model data
      "<":
        icon : RED_STAINED_GLASS_PANE
        icon_model_data : 10
        function : BACK
      ">":
        icon : LIME_STAINED_GLASS_PANE
        icon_model_data : 0
        function : FORWARD