userAgent method
Implementation
String userAgent() {
var buffer = StringBuffer();
buffer.write('Mozilla/5.0');
buffer.write(' (');
buffer.write('Nethru; ');
buffer.writeAll([_infos[Keys.maker], '; ']);
buffer.writeAll([_infos[Keys.model], '; ']);
buffer.writeAll([_infos[Keys.sdk], ' ', _infos[Keys.osVersion], '; ']);
buffer.write(_infos[Keys.resolution]);
buffer.write(')');
return buffer.toString();
}