syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"marks.push(self.outer_mark(ctxt));"}]}
source_snippet:             marks.push(self.outer_mark(ctxt));
context_before:             debug!("marks: getting parent of {:?}", ctxt);
context_after:             ctxt = self.parent_ctxt(ctxt);