{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"UNKNOWN_LINE_NUMBER,"}]}
    UNKNOWN_LINE_NUMBER, build_field_di_node, build_generic_type_param_di_nodes,
use crate::debuginfo::metadata::{
    file_metadata_from_def_id, type_di_node, unknown_file_metadata,