syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // a different ABI even when the main type is
context_before:                     // for them. They also fail that check, since they may have
context_after:                     // `Scalar`/`ScalarPair`. (Note that sometimes, variants with fields have size