Extracted<T>.rejection constructor
Creates a rejected extraction to indicate a failure trying to read the value.
When a nesting is rejected with an omitted or empty actual
argument, it
will be filled in with the literal representation of the value.
Implementation
Extracted.rejection(
{Iterable<String> actual = const [], Iterable<String>? which})
: _rejection = Rejection(actual: actual, which: which),
_value = null;