{"ast_node_type":"function","tokens":[{"end":80,"kind":"keyword","start":0,"text":"pub(crate)"}]}
    pub(crate) fn all_source_files(&self) -> impl Iterator<Item = &SourceFile> {
    /// coverage mappings. Used to build the global file table for the CGU.
        self.virtual_file_mapping.local_file_table.iter().map(Arc::as_ref)