whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. OAuthFlow? implicit,
    2. OAuthFlow? password,
    3. OAuthFlow? clientCredentials,
    4. OAuthFlow? authorizationCode,
    )?
)

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( OAuthFlow? implicit,  OAuthFlow? password,  OAuthFlow? clientCredentials,  OAuthFlow? authorizationCode)?  $default,) {final _that = this;
switch (_that) {
case _OAuthFlows() when $default != null:
return $default(_that.implicit,_that.password,_that.clientCredentials,_that.authorizationCode);case _:
  return null;

}
}