returns an array of a given object's own enumerable property
pairs in the same order as that provided by a
for...in loop (the difference being that a for-in loop enumerates properties in the
prototype chain as well).
CSSUnparsedValuewhose enumerable own property
[key, value]pairs are to be returned.
An array of the given
CSSUnparsedValue object's own enumerable property
[key, value] pairs.
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