syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// If it could match in more than one of the branches of `test`, the test
context_before:     /// (and no other branches), we put it into the corresponding bucket.
context_after:     /// doesn't usefully apply to it, and we stop partitioning candidates.