applyTextStyle method
Implementation
void applyTextStyle(NikuTextStyle v) {
if (style == null) style = NikuButtonStyle();
style!.apply = NikuButtonStyle(textStyle: v);
}
void applyTextStyle(NikuTextStyle v) {
if (style == null) style = NikuButtonStyle();
style!.apply = NikuButtonStyle(textStyle: v);
}