How do you define an empty list in darts?

List<E>. filled constructor Null safety Creates a list of the given length with fill at each position. The length must be a non-negative integer. The created list is fixed-length if growable is false (the default) and growable if growable is true.

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To create an empty list, use [] for a growable list or List. empty for a fixed length list (or where growability is determined at run-time). The created list is fixed-length if length is provided. The list has length 0 and is growable if length is omitted.

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