syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // This is not *strictly* needed, but it may help in some
context_before:             // If this is a function, we hash the signature as well.
context_after:             // situations, see the `run-make/a-b-a-linker-guard` test.