content: {
    "$id": "availabilityRectangle.schema.json",
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "description": "A rectangle of tile availability.",
    "properties": {
      "endX": {
        "description": "The index of the end tile in the X direction.",
        "type": "integer"
      },
      "endY": {
        "description": "The index of the end tile in the Y direction.",
        "type": "integer"
      },
      "startX": {
        "description": "The index of the start tile in the X direction.",
        "type": "integer"
      },
      "startY": {
        "description": "The index of the start tile in the Y direction.",
        "type": "integer"
      }
    },
    "required": [
      "startX",
      "startY",
      "endX",
      "endY"
    ],
    "title": "AvailabilityRectangle"
  }