syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:         for (span, label) in self.info.primary_labels.iter() {
context_before:             MultiSpan::from_spans(self.info.primary_labels.iter().map(|(span, _)| *span).collect());
context_after:             spans.push_span_label(*span, label.clone());