Sequence diagrams an example with replicated messages An iteration over objects is indicated by an asterisk preceding the message name Bill Purchase Item for all PurchaselgetSubtotal ge uNitpRice ompu te Total Bill Purchase Item quantity pnce www.oseng.com O Lethbridge/Laganiere 2001 Chapter 8: Modelling Interactions and behaviour© Lethbridge/Laganière 2001 Chapter 8: Modelling Interactions and Behaviour 9 • An iteration over objects is indicated by an asterisk preceding the message name * Purchase * quantity Bill Item price *[for all Purchase] getSubtotal :Bill :Item getUnitPrice computeTotal :Purchase Sequence diagrams – an example with replicated messages