rangePickerHeaderHelpStyle property
final
Overrides the default text style used for the help text of the header of a full screen DateRangePickerDialog.
The help text (also referred to as "supporting text" in the Material spec) is usually a prompt to the user at the top of the header (i.e. 'Select date').
The TextStyle.color of the rangePickerHeaderHelpStyle is not used, rangePickerHeaderForegroundColor is used instead.
See also: DateRangePickerDialog.helpText, which specifies the help text.
Implementation
final TextStyle? rangePickerHeaderHelpStyle;