usestd::fmt::Debug;/// Supertrait combining all bounds required for cell value types.
////// Any type used as a cell value must satisfy
/// `Clone + Debug + PartialEq + Send + Sync + 'static`.
/// This trait is automatically implemented for all qualifying types via a blanket impl.
pubtraitCellValue: Clone + Debug + PartialEq + Send + Sync + 'static {}impl<T:Clone+ Debug +PartialEq+Send+Sync+'static> CellValue forT{}