syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"hir::BlockCheckMode::DefaultBlock"}]}
source_snippet:                 hir::BlockCheckMode::DefaultBlock => BlockSafety::Safe,
context_before:             safety_mode: match block.rules {
context_after:                 hir::BlockCheckMode::UnsafeBlock(hir::UnsafeSource::CompilerGenerated) => {