syntax_data: {"ast_node_type":"other","tokens":[{"end":34,"kind":"keyword","start":0,"text":"rustc_type_ir::BoundConstness,"}]}
source_snippet:     rustc_type_ir::BoundConstness,
context_before:     rustc_middle::mir::ConstValue,
context_after:     rustc_type_ir::PredicatePolarity,