{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"self.dcx().create_err(errs::SelfInConstGenericTy"}]}
                    self.dcx().create_err(errs::SelfInConstGenericTy { span })
                ForwardGenericParamBanReason::ConstParamTy => {
                }