### Question:
SourceConfiguration extends BaseConfiguration { public String getCustomEPRPrefix() { return customEPRPrefix; } SourceConfiguration(ConfigurationContext configurationContext,
                               TransportInDescription description,
                               Scheme scheme,
                               WorkerPool pool,
                               PassThroughTransportMetricsCollector metrics);  SourceConfiguration(WorkerPool pool,PassThroughTransportMetricsCollector metrics); void build(); HttpParams getHttpParams(); IOReactorConfig getIOReactorConfig(); HttpProcessor getHttpProcessor(); HttpResponseFactory getResponseFactory(); String getHostname(); int getPort(); SourceConnections getSourceConnections(); TransportInDescription getInDescription(); Scheme getScheme(); String getServiceEPRPrefix(); String getCustomEPRPrefix(); HttpGetRequestProcessor getHttpGetRequestProcessor(); boolean getBooleanValue(String name, boolean def);  }### Answer:
@Test public void testGetCustomEPRPrefix() throws Exception { Assert.assertNotNull("Custom EPR prefix hasn't been initialized.", sourceConfiguration.getCustomEPRPrefix()); }