syntax_data: {"ast_node_type":"enum","tokens":[{"end":80,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// it is interpreted as an error and the corresponding enum variant is set.
context_before:     /// If the hash of the input doesn't match or no input is supplied via None,
context_after:     /// The return value signifies whether some kind of source is present.