reference

• getAssociatedChildren
  A Billing Item's associated child billing items. This includes 'floating' items that are not necessarily child billing items of this billing item.
• getObject
  Retrieve a SoftLayer_Billing_Item_Chronicle record.
• getProduct
  The entry in the product catalog that the underlying billing item is based on.
• SoftLayer_Billing_Item_Chronicle
• SoftLayer_Billing_Item_Chronicle