syntax_data: {"ast_node_type":"import","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // if we use it in generic code. See the `simd-array-trait` ui test.
context_before:         // `simd_size_and_type` post-monomorphization. It will probably start to ICE
context_after:         (