syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"HumanReadableErrorType::Unicode"}]}
source_snippet:             HumanReadableErrorType::Unicode => "human-unicode",
context_before:             HumanReadableErrorType::AnnotateSnippet => "human-annotate-rs",
context_after:             _ => return,