Registeredbill is a class that stores information about any invoice that the user has registered for.
new Registeredbill( billConfigId, alias, billTypeId, billTypeName )
| Name | Type | Description |
| billConfigId | The id of the bill configuration | |
| alias | The alias name given by the user for this configuration. | |
| billTypeId | The type id for the invoice. | |
| billTypeName | The name of the invoice/bill registered for. |