The scenario
Designing a modular espresso machine with replaceable components.
What is in this drawing
Read the decisions behind it.
01
Define a common Component interface for consistent start/stop behavior
02
Introduce an abstract HeatingElement for shared heating properties
03
Model the EspressoMachine as a composition of Boiler, Pump, and GroupHead
Useful for embedded software design, hardware abstraction layers, or modeling IoT device components.
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