syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"rustc_hidden_type_of_opaques,"}]}
source_snippet:         rustc_hidden_type_of_opaques,
context_before:         rustc_has_incoherent_inherent_impls,
context_after:         rustc_if_this_changed,