@Override
  public boolean equals(final Object other) {
    if (this == other) {
      return true;
    }

    if (!(other instanceof Bill)) {
      return false;
    }

    final Bill another = (Bill) other;
    return Objects.equals(price, another.price);
  }
Makes a bill from an order.

@param order ice cream order
@return bill
vertx/feign-vertx/src/test/java/feign/vertx/testcase/domain/Bill.java