syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"hir::MatchSource::ForLoopDesugar"}]}
source_snippet:             hir::MatchSource::ForLoopDesugar
context_before:             hir::MatchSource::ForLoopDesugar if arms.len() == 1 => {}
context_after:             | hir::MatchSource::Postfix