whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. int? handshake,
    2. @JsonKey.new(name: 'connIdle') int? connectionIdle,
    3. int? uplinkOnly,
    4. int? downlinkOnly,
    5. bool? statsUserUplink,
    6. bool? statsUserDownlink,
    7. bool? statsUserOnline,
    8. int? bufferSize,
    )?
)

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? handshake, @JsonKey(name: 'connIdle')  int? connectionIdle,  int? uplinkOnly,  int? downlinkOnly,  bool? statsUserUplink,  bool? statsUserDownlink,  bool? statsUserOnline,  int? bufferSize)?  $default,) {final _that = this;
switch (_that) {
case _Policy() when $default != null:
return $default(_that.handshake,_that.connectionIdle,_that.uplinkOnly,_that.downlinkOnly,_that.statsUserUplink,_that.statsUserDownlink,_that.statsUserOnline,_that.bufferSize);case _:
  return null;

}
}