syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"remapped_ctxts:"}]}
source_snippet:     remapped_ctxts: Lock<IndexVec<u32, Option<SyntaxContext>>>,
context_before:     // `SyntaxContext`s in the current global `HygieneData`.
context_after: }