{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"poly_existential_predicates:"}]}
            poly_existential_predicates: InternedSet::with_capacity(N / 4),
            region: InternedSet::with_capacity(N * 4),
            canonical_var_kinds: InternedSet::with_capacity(N / 2),