syntax_data: {"ast_node_type":"variable","tokens":[{"end":78,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                     if let ty::Tuple(tys) = principal.args.type_at(0).kind() {
context_before:                 if !p.should_print_verbose() && fn_trait_kind.is_some() {
context_after:                         let mut projections = predicates.projection_bounds();