merge method

Implementation

FormBubbleStyle merge(FormBubbleStyle mergeWith) {
  return FormBubbleStyle(
    radioButtonStyle: radioButtonStyle ?? mergeWith.radioButtonStyle,
    dropDownStyle: dropDownStyle ?? mergeWith.dropDownStyle,
    checkBoxStyle: checkBoxStyle ?? mergeWith.checkBoxStyle,
    textInputStyle: textInputStyle ?? mergeWith.textInputStyle,
    labelStyle: labelStyle ?? mergeWith.labelStyle,
    buttonStyle: buttonStyle ?? mergeWith.buttonStyle,
    submitButtonStyle: submitButtonStyle ?? mergeWith.submitButtonStyle,
    goalCompletionTextStyle:
        goalCompletionTextStyle ?? mergeWith.goalCompletionTextStyle,
    titleStyle: titleStyle ?? mergeWith.titleStyle,
    singleSelectStyle: singleSelectStyle ?? mergeWith.singleSelectStyle,
    width: width ?? mergeWith.width,
    height: height ?? mergeWith.height,
    background: background ?? mergeWith.background,
    border: border ?? mergeWith.border,
    borderRadius: borderRadius ?? mergeWith.borderRadius,
    gradient: gradient ?? mergeWith.gradient,
  );
}