syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"body_def.def_span(tcx.def_span(coroutine_def_id));"}]}
source_snippet:     body_def.def_span(tcx.def_span(coroutine_def_id));
context_before:     body_def.def_ident_span(tcx.def_ident_span(coroutine_def_id));
context_after:     body_def.explicit_predicates_of(tcx.explicit_predicates_of(coroutine_def_id));