TableCellVerticalAlignment defaultVerticalAlignment

How cells that do not explicitly specify a vertical alignment are aligned vertically.

Source 

TableCellVerticalAlignment get defaultVerticalAlignment => _defaultVerticalAlignment;
void defaultVerticalAlignment=(TableCellVerticalAlignment value)

Source 

set defaultVerticalAlignment (TableCellVerticalAlignment value) {
  if (_defaultVerticalAlignment == value)
    return;
  _defaultVerticalAlignment = value;
  markNeedsLayout();
}