syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"no_leak_check:"}]}
source_snippet:     no_leak_check: bool = (false, parse_no_value, [UNTRACKED],
context_before:         "disable the jump tables and lookup tables that can be generated from a switch case lowering"),
context_after:         "disable the 'leak check' for subtyping; unsound, but useful for tests"),