Who is this a "coming of age novel"?

As several critics have noted, Body and Soul is a bildungsroman, a novel of formation. According to M. H. Abrams' A Glossary of Literary Terms, the subject of a bildungsroman "is the development of the protagonist's mind and character as he passes from childhood through varied experiences - and usually through a spiritual crisis - into maturity and the recognition of his identity and role in the world. ... An important subtype of the Bildungsroman is the Kunstlerroman ("artist-novel"), which represents the development of a novelist or other artist into the stage of maturity in which he recognizes his artistic destiny and achieves mastery of his artistic craft."