syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> BlockAnd<&'b mut [&'c mut Candidate<'tcx>]> {
context_before:         candidates: &'b mut [&'c mut Candidate<'tcx>],
context_after:         // We can't expand or-patterns freely. The rule is: