syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"(*self).fmt_diff_with(*old,"}]}
source_snippet:         (*self).fmt_diff_with(*old, ctxt, f)
context_before:     fn fmt_diff_with(&self, old: &Self, ctxt: &C, f: &mut fmt::Formatter<'_>) -> fmt::Result {
context_after:     }