syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // (RETURNED, POISONED) of the function.
context_before:     // In debuginfo, these will correspond to the beginning (UNRESUMED) or end
context_after:     let body_span = body.source_scopes[OUTERMOST_SOURCE_SCOPE].span;