syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"typing_mode_borrowck:"}]}
source_snippet:     typing_mode_borrowck: bool = (false, parse_bool, [TRACKED],
context_before:     #[rustc_lint_opt_deny_field_access("use `TyCtxt::use_typing_mode_borrowck` instead of this field")]
context_after:         "enable `TypingMode::Borrowck`, changing the way opaque types are handled during MIR borrowck"),