syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"assert_incr_state:"}]}
source_snippet:         assert_incr_state: Option<IncrementalStateAssertion> [UNTRACKED],
context_before:         incremental: Option<PathBuf> [UNTRACKED],
context_after:         /// Set by the `Config::hash_untracked_state` callback for custom