apply method
Implementation
ContentTypography apply({Styles? styles, List<StyleRule>? rules, bool mergeStyles = true, bool mergeRules = true}) {
return ContentTypography(
styles: mergeStyles && styles != null ? this.styles.combine(styles) : styles ?? this.styles,
rules: mergeRules && rules != null ? [...this.rules, ...rules] : rules ?? this.rules,
);
}