Synchronous message: The message sender keeps waiting for the receiver to return control from the message execution.The messages used within an interaction diagram are as follows: This is referred to as a flow of control. As lifelines receive and interact with messages, it creates a focus of control that moves from lifeline to lifeline. It can be used to call an operation, create or destroy an instance, or send a signal. Message: A message is a specific type of communication between two lifelines in an interaction. Selector: Used as a Boolean condition to select a particular instance that satisfies the requirement.Type: Names the classifier of which the lifeline represents an instance. ![]()
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