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increment(int v) => order[v] = order[v].copyWith(quantitySet: order[v].quantitySet + 1); @action decrement(int v) => order[v] = order[v].copyWith(quantitySet: order[v].quantitySet - 1); @action setValue(int index, String value) { ord
increment(int v) => order[v] = order[v].copyWith(quantitySet: order[v].quantitySet + 1); @action decrement(int v) => order[v] = order[v].copyWith(quantitySet: order[v].quantitySet - 1); @action setValue(int index, String value) { ord