syntax_data: {"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"self.in_safety_context(SafetyContext::Safe,"}]}
source_snippet:                             self.in_safety_context(SafetyContext::Safe, |this| {
context_before:                             // of opting out.
context_after:                                 visit::walk_block(this, &this.thir()[*block])