OSID - osid.acknowledgement.Billing Service Interface Definition

Interface	osid.acknowledgement.Billing
Implements	`osid.OsidCatalog`
Description	A `Billing` represents a collection of credits. Like all OSID objects, a `Billing` is identified by its `Id` and any persisted references should use the `Id.`
Method	getBillingRecord
Description	Gets the record corresponding to the given `Billing` record `Type.` This method is used to retrieve an object implementing the requested record. The `billingRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(billingRecordType)` is `true` .
Parameters	`osid.type.Type`	`billingRecordType`	the type of billing record to retrieve
Return	`osid.acknowledgement.records.BillingRecord`		the billing record
Errors	NULL_ARGUMENT		`billingRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(billingRecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.