syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:             | Rvalue::UnaryOp(_, ref operand)
context_before:             | Rvalue::ShallowInitBox(ref operand, _)
context_after:             | Rvalue::WrapUnsafeBinder(ref operand, _) => self.gather_operand(operand),