syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:         for (drop_idx, drop_node) in drops.drop_nodes.iter_enumerated() {
context_before:         // optimization is, but it is here.
context_after:             if let DropKind::Value = drop_node.data.kind