actionscript 3 - What are the "Seams" in AS3? -

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i'm reading "working legacy code", , thinking "fancy" seams discusses in chapter 4.

since actionscript 3 doesn't have method overloading, wondering can used seam in as3 besides import statements , making subclasses?

for clarity, seam defined :

seam: seam place can alter behavior in program without editing in place.

thanks.


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