Method create

retrofit/src/main/java/retrofit2/Retrofit.java:156–180

Create an implementation of the API endpoints defined by the service interface. The relative path for a given method is obtained from an annotation on the method describing the request type. The built-in methods are retrofit2.http.GET GET, retrofit2.http.PUT PUT, {@link r

(final Class<T> service)

   * </pre>
   */
  @SuppressWarnings("unchecked") // Single-interface proxy creation guarded by parameter safety.
  public <T> T create(final Class<T> service) {
    validateServiceInterface(service);
    return (T)
        Proxy.newProxyInstance(
            service.getClassLoader(),
            new Class<?>[] {service},
            new InvocationHandler() {
              private final Object[] emptyArgs = new Object[0];

              @Override
              public @Nullable Object invoke(Object proxy, Method method, @Nullable Object[] args)
                  throws Throwable {
                // If the method is a method from Object then defer to normal invocation.
                if (method.getDeclaringClass() == Object.class) {
                  return method.invoke(this, args);
                }
                args = args != null ? args : emptyArgs;
                Reflection reflection = Platform.reflection;
                return reflection.isDefaultMethod(method)
                    ? reflection.invokeDefaultMethod(method, service, proxy, args)
                    : loadServiceMethod(service, method).invoke(proxy, args);
              }
            });
  }

  private void validateServiceInterface(Class<?> service) {
    if (!service.isInterface()) {