-d "grant_type=client_credentials" \
  "http://localhost:8080/auth/realms/{realm}/protocol/openid-connect/token"
```

The result will be a JSON document. To invoke the API you need to extract the value of the access_token property. You can then invoke the API by including the value in the Authorization header of requests to the API.

The following example shows how to get the details of the user with `{userid}` from `{realm}` realm:

        assertThat(foo.isPublic(), is(true));
        assertThat(foo.isStatic(), is(not(true)));
        assertThat(foo.isFinal(), is(not(true)));
        assertThat(foo.isAbstract(), is(not(true)));
        assertThat(foo.invoke(new MyBean()), is((Object) "hoge"));
    }

    /**
     * @throws Exception
     */
    @Test(expected = MethodNotStaticRuntimeException.class)
    public void testFoo_InvokeStatic() throws Exception {

   * don't hang around during other tests.)
   */
  @Override
  public void tearDown() throws Exception {
    try {
      Thread.class.getMethod("stop").invoke(this);
      join();
    } catch (ReflectiveOperationException e) {
      // stop() threw or did not exist. Don't join() the thread, which might hang forever.
    }

    if (uncaughtThrowable != null) {

    }
    if (isDurationBased(method)) {
      arguments.add(Duration.ofMillis(timeout.millis));
    }
    try {
      Object result;
      doingCallLatch.countDown();
      try {
        result = method.invoke(monitor, arguments.toArray());
      } finally {
        callCompletedLatch.countDown();
      }
      if (result == null) {
        return Outcome.SUCCESS;
      } else if ((Boolean) result) {

	// since the `objectLayer==nil`  check is performed before any other checks inside the handlers.
	// The only aim is to generate an HTTP request in a way that the relevant/registered end point is evoked/called.

	nilBucket := "dummy-bucket"
	nilReq, err := newTestRequest(http.MethodGet, getBucketLocationURL("", nilBucket), 0, nil)
	if err != nil {

                    final PreDestroy postConstruct = method.getAnnotation(PreDestroy.class);
                    if (postConstruct != null) {
                        MethodUtil.invoke(method, instance);
                    }
                }
            }

            if (destroyer != null) {
                destroyer.accept(instance);
            }
        }
    }

     * interceptors.
     *
     * ```kotlin
     * val interceptor = Interceptor { chain: Interceptor.Chain ->
     *     chain.proceed(chain.request())
     * }
     * ```
     */
    inline operator fun invoke(crossinline block: (chain: Chain) -> Response): Interceptor = Interceptor { block(it) }
  }

  interface Chain {
    fun request(): Request

    @Throws(IOException::class)
    fun proceed(request: Request): Response

        if (value != null) {
            try {
                if (listener != null) {
                    listener.notifyFieldChangeUsingSetter("", value, bean);
                }
                setterInfo.method.invoke(bean, value);
            } catch (IllegalAccessException | InvocationTargetException | LinkageError e) {
                throw new ComponentConfigurationException(configuration, "Cannot set default", e);
            }

      this.map = map;
      this.setUpRan = setUpRan;
    }

    @Override
    public Object invoke(Object target, Method method, Object[] args) throws Throwable {
      assertTrue("setUp should have run", setUpRan.get());
      try {
        return method.invoke(map, args);
      } catch (InvocationTargetException e) {
        throw e.getCause();
      } catch (IllegalAccessException e) {

 *
 * <h3>Usage</h3>
 *
 * Given an algorithm, for example:
 *
 * {@snippet :
 * public <N> someGraphAlgorithm(N startNode, PredecessorsFunction<N> predecessorsFunction);
 * }
 *
 * you will invoke it depending on the graph representation you're using.
 *
 * <p>If you have an instance of one of the primary {@code common.graph} types ({@link Graph},
 * {@link ValueGraph}, and {@link Network}):
 *
 * {@snippet :