syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"assert_ne!(edit_distance(\"ab\","}]}
source_snippet:     assert_ne!(edit_distance("ab", "ba", usize::MAX), Some(2));
context_before:     // Not Levenshtein distance.
context_after:     // Not unrestricted Damerau-Levenshtein distance.