merge method
Implementation
SliderThemeData merge(SliderThemeData? style) {
return SliderThemeData(
margin: style?.margin ?? margin,
thumbColor: style?.thumbColor ?? thumbColor,
thumbRadius: style?.thumbRadius ?? thumbRadius,
activeColor: style?.activeColor ?? activeColor,
inactiveColor: style?.inactiveColor ?? inactiveColor,
labelBackgroundColor: style?.labelBackgroundColor ?? labelBackgroundColor,
labelForegroundColor: style?.labelForegroundColor ?? labelForegroundColor,
useThumbBall: style?.useThumbBall ?? useThumbBall,
trackHeight: style?.trackHeight ?? trackHeight,
);
}