examples/rbac_with_pattern_policy.csv

p, alice, /pen/1, GET
p, alice, /pen2/1, GET
p, book_admin, book_group, GET
p, pen_admin, pen_group, GET

g, alice, book_admin
g, bob, pen_admin
g2, /book/:id, book_group
g2, /pen/:id, pen_group