syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                             // try to print
context_before:                             // `impl<T: Default> Default for [T; 32 - 1 - 1 - 1] {` where we would
context_after:                             // `<[T; /* print constant#0 again */] as // Default>::{constant#0}`.