syntax_data: {"ast_node_type":"other","tokens":[{"end":22,"kind":"keyword","start":0,"text":"tcx:"}]}
source_snippet:     tcx: TyCtxt<'tcx>,
context_before: pub(super) fn create_coroutine_drop_shim_async<'tcx>(
context_after:     transform: &TransformVisitor<'tcx>,