Change the "extra" part of the backing value to newExtra
if the backing value is a BuilderFailure.
Change the "extra" part of the backing value to newExtra
if the backing value is a BuilderFailure.
Only available if the "extra" part is currently Unit
Flatmap the backing value if the backing value is a BuilderFailure, else return the backing value
Map the backing value if the backing value is a BuilderFailure, else return the backing value
Map the "main" part of the backing value if the backing value is a BuilderFailure, else return the backing value
A projection as if the ParserRetVal were a BuilderFailure
4.0