actions property
The (optional) set of actions that are displayed at the bottom of the dialog.
Typically this is a list of TextButton widgets.
These widgets will be wrapped in a ButtonBar, which introduces 8 pixels of padding on each side.
If the title is not null but the content is null, then an extra 20 pixels of padding is added above the ButtonBar to separate the title from the actions.
Implementation
final List<Widget> actions;