public override bool Equals(object obj)
        {
            if (obj == null)
            {
                return(false);
            }

            if (obj == this)
            {
                return(true);
            }

            return(obj is SearchOrdersFilter other &&
                   ((StateFilter == null && other.StateFilter == null) || (StateFilter?.Equals(other.StateFilter) == true)) &&
                   ((DateTimeFilter == null && other.DateTimeFilter == null) || (DateTimeFilter?.Equals(other.DateTimeFilter) == true)) &&
                   ((FulfillmentFilter == null && other.FulfillmentFilter == null) || (FulfillmentFilter?.Equals(other.FulfillmentFilter) == true)) &&
                   ((SourceFilter == null && other.SourceFilter == null) || (SourceFilter?.Equals(other.SourceFilter) == true)) &&
                   ((CustomerFilter == null && other.CustomerFilter == null) || (CustomerFilter?.Equals(other.CustomerFilter) == true)));
        }