syntax_data: {"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// the coroutine body doesn't have the `resume` argument.
context_before: /// still using the `resume` argument for the time being. After this transform,
context_after: fn transform_gen_context<'tcx>(body: &mut Body<'tcx>) {