isCompleted property
A cell that is true when the Futures in the cells in this have completed, false otherwise.
NOTE: The returned cell must have at least one observer in order to function.
Implementation
ValueCell<bool> get isCompleted {
return awaited
.apply((_) => true, key: _IsCompleteCellKey(this))
.loadingValue(false.cell)
.onError(true.cell);
}