Instead, we store the collection on the object itself and use call on Array.prototype.push to trick the method into thinking we are dealing with an array, and it just works, thanks to the way JavaScript allows us to establish the execution context however we please.
We slaan de verzameling op in het object zelf en gebruiken call op Array.prototype.push om de methode te laten denken dat we te maken hebben met een array en het werkt.
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