syntax_data: {"ast_node_type":"import","tokens":[{"end":57,"kind":"keyword","start":0,"text":"use"}]}
source_snippet:         use crate::config::dep_tracking::DepTrackingHash;
context_before:     ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [SUBSTRUCT]) => {
context_after:         $opt_expr.dep_tracking_hash($for_crate_hash, $error_format).hash(