join function Null safety

String join(
  1. String part1,
  2. [String? part2,
  3. String? part3,
  4. String? part4,
  5. String? part5,
  6. String? part6,
  7. String? part7,
  8. String? part8]

Joins the given path parts into a single path using the current platform's separator. Example:

p.join('path', 'to', 'foo'); // -> 'path/to/foo'

If any part ends in a path separator, then a redundant separator will not be added:

p.join('path/', 'to', 'foo'); // -> 'path/to/foo

If a part is an absolute path, then anything before that will be ignored:

p.join('path', '/to', 'foo'); // -> '/to/foo'


String join(String part1,
        [String? part2,
        String? part3,
        String? part4,
        String? part5,
        String? part6,
        String? part7,
        String? part8]) =>
    context.join(part1, part2, part3, part4, part5, part6, part7, part8);