Dart APIunself_styleUnFontWeightbold bold constant Null safety FontWeight const bold FontWeight value of w700 Implementation static const FontWeight bold = FontWeight.w700; unself_style unself_style UnFontWeight bold constant UnFontWeight class Constructors UnFontWeight Properties hashCode runtimeType Methods noSuchMethod toString Operators operator == Constants black bold extraBold extraLight light medium regular semiBold thin