isFile function
Implementation
bool isFile(String? urlType) {
if (urlType == null) {
return false;
}
bool isNetWorkFile =
urlType.contains("https://") || urlType.contains("http://");
bool isSvg = urlType.contains(".svg");
bool isPng = urlType.contains(".png");
bool jpegJpg = urlType.contains(".jp");
return isNetWorkFile || isPng || isSvg || jpegJpg;
}