label property
final
The text label that appears below the icon of this NavigationDestination.
The accompanying Text widget will use NavigationBarThemeData.labelTextStyle. If this is null, the default text style will use TextTheme.labelMedium with ColorScheme.onSurface when the destination is selected and ColorScheme.onSurfaceVariant when the destination is unselected. If ThemeData.useMaterial3 is false, then the default text style will use TextTheme.labelSmall with ColorScheme.onSurface.
Implementation
final String label;