syntax_data: {"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"visit_subpat(self,"}]}
source_snippet:                 visit_subpat(self, subpattern, &ProjectedUserTypesNode::None, f);
context_before:             PatKind::DerefPattern { ref subpattern, .. } => {
context_after:             }