syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"ty.map_bound(|ty|"}]}
source_snippet:                 ty.map_bound(|ty| AutoImplConstituents { types: vec![ty], assumptions: vec![] })
context_before:             ty::UnsafeBinder(ty) => {
context_after:             }