merge method

Implementation

@override
MaterialBindingStyle merge(MaterialBindingStyle? other) {
  if (other == null) return this;
  return MaterialBindingStyle(
    inputTheme: inputTheme?.merge(other.inputTheme) ?? other.inputTheme,
    buttonStyle: buttonStyle?.merge(other.buttonStyle) ?? other.buttonStyle,
    sectionTheme: sectionTheme?.merge(other.sectionTheme) ?? other.sectionTheme,
  );
}