syntax_data: {"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":".instantiate_bound_regions_with_erased(parent_closure_args.coroutine_closure_sig())"}]}
source_snippet:         .instantiate_bound_regions_with_erased(parent_closure_args.coroutine_closure_sig())
context_before:     let by_move_coroutine_ty = tcx
context_after:         .to_coroutine_given_kind_and_upvars(