A property descriptor is a record which has the following attributes
value: The value associated with the property
writable: Determines whether the value associated with the property can be changed or not
configurable: Returns true if the type of this property descriptor can be changed and if the property can be deleted from the corresponding object.
enumerable: Determines whether the property appears during enumeration of the properties on the corresponding object or not.
set: A function which serves as a setter for the property
get: A function which serves as a getter for the property
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