syntax_data: {"ast_node_type":"import","tokens":[{"end":89,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // MemorySanitizer uses lifetimes to detect use of uninitialized stack variables.
context_before:         // AddressSanitizer and KernelAddressSanitizer uses lifetimes to detect use after scope bugs.
context_after:         // HWAddressSanitizer will use lifetimes to detect use after scope bugs in the future.