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Facade

Facade is a structural pattern that provides a simplified interface to a complex subsystem. It doesn't prevent access to the subsystem — it just adds a convenient front door. A facade defines a higher-level interface that makes a complex body of code easier to use, hiding most of the details behind a single entry point.

ℹ️Core idea: give the client a single simple interface to a complex subsystem. The facade knows which subsystem classes to call and in what order — the client doesn't have to.
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