syntax_data: {"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                         if let Some(&block) = target_blocks.get(&TestBranch::Variant(idx)) {
context_before:                     adt_def.discriminants(self.tcx).filter_map(|(idx, discr)| {
context_after:                             Some((discr.val, block))