syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // The current implementation is a restricted Damerau-Levenshtein distance.
context_before:     assert_ne!(edit_distance("abde", "bcaed", usize::MAX), Some(3));
context_after:     assert_eq!(edit_distance("abde", "bcaed", usize::MAX), Some(4));