DomInitDictAttribute
This attribute decorates official DOM methods as specified by the W3C.
It tells scripting engines that bags with objects should be provided,
which have to be expanded to be used as arguments.
Gets if the dictionary is completely optional and does not have to
be present.
Gets the offset of the passed arguments. Arguments before the offset
will be skipped and are not part of the dictionary.
Creates a new DomInitDict attribute.