syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"error(GenericConstantTooComplexSub::BinaryNotSupported(node.span))?"}]}
source_snippet:             error(GenericConstantTooComplexSub::BinaryNotSupported(node.span))?
context_before:         ExprKind::Binary { .. } => {
context_after:         }