Any error this library raises, as a union of its three classes.
The type a non-throwing entry point reports its failure as: a caller that holds one of these already knows it carries a LibcantusErrorCode and a message worth showing.
Any error this library raises, as a union of its three classes.
The type a non-throwing entry point reports its failure as: a caller that holds one of these already knows it carries a LibcantusErrorCode and a message worth showing.