message: Fix AssemblyScript failure.
diff: @@ -38,17 +38,17 @@ export const enum SystemContract {
  */
  Mint = 0,
  /**
  - * Handle Payment contract.
  + * Auction contract.
  */
  - HandlePayment = 1,
  + Auction = 2,
  /**
  - * Standard Payment contract.
  + * Handle Payment contract.
  */
  - StandardPayment = 2,
  + HandlePayment = 3,
  /**
  - * Auction contract.
  + * Standard Payment contract.
  */
  - Auction = 3,
  + StandardPayment = 4,
  }
  /**
  