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    Sub-task 
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    Resolution: Fixed
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     P4 P4
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    None
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    None
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        b86
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        generic
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        generic
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        Verified
                    Object.defineProperty([], "length", Object.defineProperty({},"configurable",{get: function(){print("configurable"); return false}}))
=> should print "configurable" only once
User specified PropertyDescriptor objects accessors like "configurable" getter above should be invoked only once.
=> should print "configurable" only once
User specified PropertyDescriptor objects accessors like "configurable" getter above should be invoked only once.