code: private void checkContainerState(String methodName, ContainerState minimalState) {
          if (nonPortableMode) {
              return;
          }
          if (this.container == null) {
              this.container = Container.instance(manager);
          }
  
          ContainerState state = container.getState();
          if (SHUTDOWN.equals(state)) {
              throw BeanManagerLogger.LOG.methodNotAvailableAfterShutdown(methodName);
          }
          if (state.compareTo(minimalState) < 0) {
              throw BeanManagerLogger.LOG.methodNotAvailableDuringInitialization(methodName, state);
          }
      }
docs: When in portable mode (default) this method verifies that the container has reached the specified minimal state.
  If it hasn't, an {@link IllegalStateException} is thrown. When in non-portable mode this method is no-op.
  
  @param methodName
  @param minimalState the minimal state
  @throws IllegalStateException If the application initialization is not finished yet