syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // since it does two things: It makes the iterator yield *all* of the types
context_before:     // FIXME: Calling this bool `exhaustive` is confusing and possibly a footgun,
context_after:     // that need drop, and it also affects the computation of the drop components