Refund constructor

Refund({ ItemType? type, String? optType, Operation? operation, String? operator, num? quantity, num? unitPrice, num? amount, String? description, String? department, String? justification, })

Implementation

Refund({
  this.type,
  this.optType,
  this.operation,
  this.operator,
  this.quantity,
  this.unitPrice,
  this.amount,
  this.description,
  this.department,
  this.justification,
});