syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"Span::new(cmp::min(from.lo,"}]}
source_snippet:                 Span::new(cmp::min(from.lo, to.lo), cmp::max(from.lo, to.lo), from.ctxt, parent)
context_before:             Ok((from, to, parent)) => {
context_after:             }