NBResponse constructor
Implementation
NBResponse(Map<String, dynamic> nb) {
// The type coercion is necessary as maps return String?
// which cannot be assigned to type String. Url is always
// present in both static and gif response
url = nb['url'] as String;
artist_href = nb['artist_href'];
artist_name = nb['artist_name'];
source_url = nb['source_url'];
anime_name = nb['anime_name'];
}