merge method
Implementation
ZeroSpeedDialStyle merge(ZeroSpeedDialStyle? other) {
if (other == null) return this;
return copyWith(
activeColor: other.activeColor,
inactiveColor: other.inactiveColor,
size: other.size,
spacing: other.spacing,
tooltipBackgroundColor: other.tooltipBackgroundColor,
tooltipBorderColor: other.tooltipBorderColor,
elevation: other.elevation,
shadowColor: other.shadowColor,
borderRadius: other.borderRadius,
tooltipStyle:
tooltipStyle?.merge(other.tooltipStyle) ?? other.tooltipStyle,
);
}