syntax_data: {"ast_node_type":"other","tokens":[{"end":17,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:                 }
context_before:                     tcx.arena.alloc_from_iter(remapped_wf_tys)
context_after:                 // Assumed wf types for RPITITs in an impl just inherit (and instantiate)