merge method
Copy this with a new typography
Implementation
Typography merge(Typography? typography) {
if (typography == null) return this;
return Typography.raw(
display: typography.display ?? display,
titleLarge: typography.titleLarge ?? titleLarge,
title: typography.title ?? title,
subtitle: typography.subtitle ?? subtitle,
bodyLarge: typography.bodyLarge ?? bodyLarge,
bodyStrong: typography.bodyStrong ?? bodyStrong,
body: typography.body ?? body,
caption: typography.caption ?? caption,
);
}