### Question:
CustomConfiguration { public String getIntrospectionEndpoint() { return mIntrospectionEndpoint; } private  CustomConfiguration(); String getAuthorizationEndpoint(); String getTokenEndpoint(); String getUserInfoEndpoint(); String getJwksUri(); String getRegistrationEndpoint(); String getIntrospectionEndpoint(); String getRevocationEndpoint(); String getEndSessionEndpoint();  }### Answer:
@Test public void getIntrospectionEndpoint() { String endpoint = mConfig.getIntrospectionEndpoint(); assertNotNull(endpoint); assertEquals(CUSTOM_URL + INTROSPECT_ENDPOINT, endpoint); }