syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"error(GenericConstantTooComplexSub::OperationNotSupported(node.span))?"}]}
source_snippet:             error(GenericConstantTooComplexSub::OperationNotSupported(node.span))?
context_before:         | ExprKind::ThreadLocalRef(_) => {
context_after:         }