syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"visit_subpat(self,"}]}
source_snippet:                 visit_subpat(self, subpattern, &user_tys.deref(), f);
context_before:             PatKind::Deref { ref subpattern } => {
context_after:             }