The apex class for `ArrayOfSalesforceChangeType` will appear something like:

    public class ArrayOfSalesforceChangeType {
        public ApexClassForWSDL.SalesforceChangeType[] SalesforceChangeType;
        private String[] SalesforceChangeType_type_info = new String[]{'SalesforceChangeType','http://webservice/api','SalesforceChangeType','0','-1','true'};
        private String[] apex_schema_type_info = new String[]{'http://webservice/api','true','false'};
        private String[] field_order_type_info = new String[]{'SalesforceChangeType'};
    }

You will need to add the records to the `SalesforceChangeType` member.

E.g.

    TriggerService.ArrayOfSalesforceChangeType changes = new TriggerService.ArrayOfSalesforceChangeType();
    TriggerService.SalesforceChangeType change = new TriggerService.SalesforceChangeType();
    changes.SalesforceChangeType = new List<SalesforceChangeType>();
    changes.SalesforceChangeType.add(change);