syntax_data: {"ast_node_type":"function","tokens":[{"end":85,"kind":"keyword","start":0,"text":"pub(crate)"}]}
source_snippet:     pub(crate) fn mirror_block(&mut self, block: &'tcx hir::Block<'tcx>) -> BlockId {
context_before: impl<'tcx> ThirBuildCx<'tcx> {
context_after:         // We have to eagerly lower the "spine" of the statements