syntax_data: {"ast_node_type":"function","tokens":[{"end":55,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet: fn transform_gen_context<'tcx>(body: &mut Body<'tcx>) {
context_before: /// the coroutine body doesn't have the `resume` argument.
context_after:     // This leaves the local representing the `resume` argument in place,