Save. Factory Method is referred as a creational design pattern which provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created . Also known as virtual constructors.
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_Internal const internal. Used to annotate a declaration which should only be used from within the package in which it is declared, and which should not be exposed from said package’s public API . Tools, such as the analyzer, can provide feedback if.
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