What metaphors are used in J.M. Barrie & the Lost Boys by Andrew Birkin?

Metaphor:

"At the age of 13, Barrie 'put the literary calling to bed for a time, having gone to a school where cricket and football were more esteemed'. His childhood was over."

"Just as Tommy and Grizel chronicled Barrie's failing marriage and his own inability to grow up, so the Little White Bird follows his relationship with George and his own profound yearnings for fatherhood - or, perhaps, motherhood."