Function verify_error 

pub async fn verify_error(
    model: &dyn Model,
    request: ModelRequest,
    context: ModelCallContext,
    contract: &ErrorContract,
) -> Result<ProviderConformanceReport, ProviderConformanceError>

Executes and verifies one failed canonical provider invocation.

Errors

Returns ProviderConformanceError when the invocation succeeds or its error classification differs from the contract.