syntax_data: {"ast_node_type":"variable","tokens":[{"end":52,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let Some(cnum) = def_id.as_crate_root() {
context_before:         // path to the crate followed by the path to the item within the crate.
context_after:             if cnum == LOCAL_CRATE {