@Test
    void testRetrievingNonExistingRendererThrows() {
        assertThrows(IllegalArgumentException.class, () -> {
            driver = new ProcessingTestDriver(List.of());
            driver.processingHandler().getRendererCopy(ComponentSpecification.fromString("non-existent"));
        });
    }
Tests that the ResponseStatus takes precedence over errors
container-core/src/test/java/com/yahoo/processing/handler/ProcessingHandlerTestCase.java