whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. int version,
    2. String? auth,
    3. String? congestion,
    4. Bandwidth? up,
    5. Bandwidth? down,
    6. @JsonKey.new(name: 'udphop') UdpHop? udpHop,
    7. int? udpIdleTimeout,
    8. Masquerade? masquerade,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( int version,  String? auth,  String? congestion,  Bandwidth? up,  Bandwidth? down, @JsonKey(name: 'udphop')  UdpHop? udpHop,  int? udpIdleTimeout,  Masquerade? masquerade)?  $default,) {final _that = this;
switch (_that) {
case _HysteriaConfig() when $default != null:
return $default(_that.version,_that.auth,_that.congestion,_that.up,_that.down,_that.udpHop,_that.udpIdleTimeout,_that.masquerade);case _:
  return null;

}
}