syntax_data: {"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                         if let Some(kind) = param.self_kind {
context_before:                     **self.local_decls[local].local_info.as_mut().unwrap_crate_local() =
context_after:                             LocalInfo::User(BindingForm::ImplicitSelf(kind))