Add UUID regular expression pattern to all id properties in JSON schemas

{
  "$schema" : "http://json-schema.org/draft-04/schema#",
  "title": "Account schema",
  "description": "User fines/fees account",
  "type": "object",
  "properties": {
    "amount": {
      "description": "Amount of the fine/fee",
      "type": "number"
    },
    "remaining": {
      "description": "Remaining of the fine/fee",
      "type": "number"
    },
    "dateCreated": {
      "description": "Date and time the account of the fine/fee was created",
      "type": "string",
      "format": "date-time"
    },
    "dateUpdated": {
      "description": "Date and time the account of the fine/fee was updated",
      "type": "string",
      "format": "date-time"
    },
    "status": {
      "description": "Overall status of the fee/fine",
      "type": "object",
      "properties": {
        "name": {
          "description": "Name of the status (values used are Open and Closed)",
          "type": "string"
        }
      },
      "required": [
        "name"
      ]
    },
    "paymentStatus": {
      "description": "Overall status of the payment/waive/transfer/refund/cancel",
      "type": "object",
      "properties": {
        "name": {
          "description": "Name of the status (values used are Outstanding, Paid partially, Paid fully, Waived partially, Waived fully, Transferred partially, Transferred fully, Refunded partially, Refunded fully, Cancelled as error)",
          "type": "string"
        }
      },
      "required": [
        "name"
      ]
    },
    "feeFineType": {
      "description": "Fee/fine that is up to the desecration of the user",
      "type": "string"
    },
    "feeFineOwner": {
      "description": "Owner of the fee/fine defined by the library and is associated with specific fees/fines",
      "type": "string"
    },
    "title": {
      "description": "The title associated with the item",
      "type": "string"
    },
    "callNumber": {
      "description": "Identifier (Call number) assigned to an item",
      "type": "string"
    },
    "barcode": {
      "description": "Text, with input likely validated by the barcode scanner",
      "type": "string"
    },
    "materialType": {
      "description": "Material type what define what type of thing the item is",
      "type": "string"
    },
    "itemStatus": {
      "description": "The status of the item",
      "type": "object",
      "properties": {
        "name": {
          "description": "Name of the item state",
          "type": "string"
        }
      },
      "required": [
        "name"
      ]
    },
    "location": {
      "description": "Effective location is used to know the current home location for the item",
      "type": "string"
    },
    "metadata": {
      "description": "Metadata about creation to user fine/fee account, provided by the server",
      "type": "object",
      "$ref" : "raml-util/schemas/metadata.schema"
    },
    "dueDate": {
      "description": "Date time when the item is due to be returned",
      "type": "string",
      "format": "date-time"
    },
    "returnedDate": {
      "description": "Date time when the item is returned and the loan ends, if the user does not have a loan associated, hyphen (-) is added as default",
      "type": "string",
      "format": "date-time"
    },
    "loanId": {
      "description": "ID of the loan",
      "type": "string"
    },
    "userId": {
      "description": "ID of the user",
      "type": "string"
    },
    "itemId": {
      "description": "ID of the item",
      "type": "string"
    },
    "materialTypeId": {
      "description": "ID of the materialType",
      "type": "string"
    },
    "feeFineId": {
      "description": "ID of the feefines",
      "type": "string"
    },
    "ownerId": {
      "description": "ID of the owner",
      "type": "string"
    },
    "id": {
      "description": "User fine/fee account id, UUID",
      "type": "string"
    },
    "holdingsRecordId": {
      "description": "Item field: item.holdingsRecordId",
      "type": "string",
      "readonly": true
    },
    "instanceId": {
      "description": "Holdings record field: holdingsRecord.instanceId",
      "type": "string",
      "readonly": true
    }
  },
  "additionalProperties": false,
  "required": [
    "userId",
    "itemId",
    "materialTypeId",
    "feeFineId",
    "ownerId",
    "id"
   ]
}

    "loanId": {
      "description": "ID of the loan",
      "type": "string"
    },

    "loanId": {
      "description": "ID of the loan",
      "type": "string",
      "pattern": "^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$"
    },