{"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"if_span:"}]}
                    if_span: lo,
                let guar = self.dcx().emit_err(errors::IfExpressionMissingThenBlock {
                    missing_then_block_sub: errors::IfExpressionMissingThenBlockSub::AddThenBlock(