{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"InEnvironment,"}]}
    InEnvironment, Lifetime, LifetimeData, OpaqueTy, OpaqueTyId, ProgramClause, ProgramClauseData,
    Constraint, Constraints, FnAbi, FnDefId, GenericArg, GenericArgData, Goal, GoalData, Goals,
    ProgramClauses, ProjectionTy, QuantifiedWhereClause, QuantifiedWhereClauses, Substitution, Ty,