syntax_data: {"ast_node_type":"other","tokens":[{"end":102,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // if the compiler may assume that the programmer is doing additional validity checks,
context_before:             let src_quantifier = if self.assume.validity {
context_after:                 // (e.g.: that `src != 3u8` when the destination type is `bool`)