syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"rustc_data_structures::fx::FxIndexSet<super::InlineAsmReg>,"}]}
source_snippet:             rustc_data_structures::fx::FxIndexSet<super::InlineAsmReg>,
context_before:             super::InlineAsmRegClass,
context_after:         > {