getThumbnailURL method
Implementation
String getThumbnailURL(String url) {
var result = url.replaceAllMapped(
_thumbnailURL,
(match) => match.input //
.replaceAll(
match.group(1)!,
r'/upload/w_320,h_320,c_limit/',
)
.replaceAll(
match.group(2)!,
r'.png',
),
);
return result;
}