syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"marks.push(data.remove_mark(&mut"}]}
source_snippet:                 marks.push(data.remove_mark(&mut glob_ctxt));
context_before:             while !data.is_descendant_of(expn_id, data.outer_expn(glob_ctxt)) {
context_after:             }