code: function() {
      this.jsonInit({
        "message0": Blockly.Msg.MOTION_ALIGNSCENE,
        "args0": [
          {
            "type": "field_dropdown",
            "name": "ALIGNMENT",
            "options": [
              [Blockly.Msg.MOTION_ALIGNSCENE_BOTTOMLEFT, 'bottom-left'],
              [Blockly.Msg.MOTION_ALIGNSCENE_BOTTOMRIGHT, 'bottom-right'],
              [Blockly.Msg.MOTION_ALIGNSCENE_MIDDLE, 'middle'],
              [Blockly.Msg.MOTION_ALIGNSCENE_TOPLEFT, 'top-left'],
              [Blockly.Msg.MOTION_ALIGNSCENE_TOPRIGHT, 'top-right']
            ]
          }
        ],
        "category": Blockly.Categories.motion,
        "extensions": ["colours_motion", "shape_statement"]
      });
    }
docs: Block to change the stage's scrolling alignment. Does not actually do
  anything. This is an obsolete block that is implemented for compatibility
  with Scratch 2.0 projects.
  @this Blockly.Block