Use case

Sometimes we need to leave Table cells blank (no child widget) by design.
Right now the workaround is e,g, to put a blank Container() in to imitate emptiness. However it clutters the widget tree and building code.

Proposal

Instead of throwing a FlutterError( 'One of the children of one of the rows of the table was null.\n' 'The children of a TableRow must not be null.' ); accept null and treat it the same way you now treat an empty Container() as a child.