The default, which resolves to None or else the Table Panel's rowSizing and columnSizing if present.
The default if none is specified on the Table Panel's rowSizing and columnSizing.
If a Table Panel is larger than all the rows/columns then this grants this row/column and any others with the same value the extra space, apportioned proportionally between them.
This enumeration specifies how rows and columns deal with extra space. Used for RowColumnDefinition.sizing.
since3.0