toMap method
Convert to a map of name -> content pairs
Implementation
Map<String, String> toMap() {
final map = <String, String>{'twitter:card': card.value};
if (title != null) map['twitter:title'] = title!;
if (description != null) map['twitter:description'] = description!;
if (image != null) map['twitter:image'] = image!;
if (imageAlt != null) map['twitter:image:alt'] = imageAlt!;
if (site != null) map['twitter:site'] = site!;
if (creator != null) map['twitter:creator'] = creator!;
if (player != null) map['twitter:player'] = player!;
if (playerWidth != null) map['twitter:player:width'] = playerWidth!;
if (playerHeight != null) map['twitter:player:height'] = playerHeight!;
return map;
}