syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"self.this.fmt_with(self.ctxt,"}]}
source_snippet:         self.this.fmt_with(self.ctxt, f)
context_before:     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
context_after:     }