{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"///"}]}
    /// while `file_id` will be the one of the module declaration site.
    /// If this map is for a module, this will be the [`HirFileId`] of the module's definition site,
    /// The usize is the index into `source` from which point on the entries reside in the def site