{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"alloc_decoding_session:"}]}
            alloc_decoding_session: self.alloc_decoding_state.new_decoding_session(),
            file_index_to_stable_id: &self.file_index_to_stable_id,
            syntax_contexts: &self.syntax_contexts,