Defines the data of a billing contact.
@:optionaloptionalphoneContacts:Null<Array<PhoneContactData>>
@:optionaloptionallastName:Null<String>
@:optionaloptionalfirstName:Null<String>
@:optionaloptionalemailAddress:Null<String>
@:optionaloptionaldepartment:Null<String>
@:optionaloptionalcustomerNumber:Null<String>
@:optionaloptionalcompanyName:Null<String>
@:optionaloptionaladdress:Null<AddressData>