{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"predefined_opaques_in_body:"}]}
            predefined_opaques_in_body: InternedSet::with_capacity(N),
            external_constraints: InternedSet::with_capacity(N),
            fields: InternedSet::with_capacity(N * 4),