code: @Override
    protected void doInitialize() throws ComponentInitializationException {
      super.doInitialize();
  
      if (this.assertionLookupStrategy == null) {
        this.assertionLookupStrategy = new AssertionStrategy();
      }
      if (this.proxyIdpAuthenticationContextLookupStrategy == null) {
        this.proxyIdpAuthenticationContextLookupStrategy = new ProxyIdpAuthenticationContextLookup();
      }
    }
docs: {@inheritDoc}