package constvar type InvoiceQueryClass string const ( InvoiceQueryClassExpireLessThen60Days InvoiceQueryClass = "" ) type InvoiceKeywordType string const ( InvoiceKeywordCustomerName InvoiceKeywordType = "" ) type InvoiceSourceType int const ( InvoiceSourceTypeSaleDetail InvoiceSourceType = 1 InvoiceSourceTypeServiceContract InvoiceSourceType = 2 )