substringAfter method
Returns a substring after the first occurrence of delimiter.
Example:
'user@example.com'.substringAfter('@'); // 'example.com'
Implementation
String substringAfter(String delimiter, {String? missingDelimiterValue}) {
final index = indexOf(delimiter);
return index == -1 ? (missingDelimiterValue ?? this) : substring(index + delimiter.length);
}