tryParse method Null safety
Creates a new Uri object by parsing a URI string.
If start and end are provided, they must specify a valid substring
of uri, and only the substring from start to end is parsed as a URI.
Returns null if the uri string is not valid as a URI or URI reference.
Implementation
static Uri? tryParse(String uri, [int start = 0, int? end]) {
// TODO: Optimize to avoid throwing-and-recatching.
try {
return parse(uri, start, end);
} on FormatException {
return null;
}
}