{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"///"}]}
    /// Once `NodeId`s are assigned, the node may not be expanded, removed, or otherwise modified.
    /// Returns a `Folder` that deeply expands all macros and assigns all `NodeId`s in an AST node.
    pub fn monotonic_expander<'b>(&'b mut self) -> expand::MacroExpander<'b, 'a> {