mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? repoViewDetail(
    1. UVerificationViewIssuerRepoRepoViewDetail value
    )?,
  2. TResult? repoViewNotFound(
    1. UVerificationViewIssuerRepoRepoViewNotFound value
    )?,
  3. TResult? unknown(
    1. UVerificationViewIssuerRepoUnknown value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult? mapOrNull<TResult extends Object?>({TResult? Function( UVerificationViewIssuerRepoRepoViewDetail value)?  repoViewDetail,TResult? Function( UVerificationViewIssuerRepoRepoViewNotFound value)?  repoViewNotFound,TResult? Function( UVerificationViewIssuerRepoUnknown value)?  unknown,}){
final _that = this;
switch (_that) {
case UVerificationViewIssuerRepoRepoViewDetail() when repoViewDetail != null:
return repoViewDetail(_that);case UVerificationViewIssuerRepoRepoViewNotFound() when repoViewNotFound != null:
return repoViewNotFound(_that);case UVerificationViewIssuerRepoUnknown() when unknown != null:
return unknown(_that);case _:
  return null;

}
}