config/src/main/java/org/springframework/security/config/http/HttpConfigurationBuilder.java
private void createJaasApiFilter() {
		final String ATT_JAAS_API_PROVISION = "jaas-api-provision";
		final String DEF_JAAS_API_PROVISION = "false";

		String provideJaasApi = httpElt.getAttribute(ATT_JAAS_API_PROVISION);
		if (!StringUtils.hasText(provideJaasApi)) {
			provideJaasApi = DEF_JAAS_API_PROVISION;
		}

		if ("true".equals(provideJaasApi)) {
			jaasApiFilter = new RootBeanDefinition(JaasApiIntegrationFilter.class);
		}
	}
private void createJaasApiFilter() {
		final String ATT_JAAS_API_PROVISION = "jaas-api-provision";
		final String DEF_JAAS_API_PROVISION = "false";

		String provideJaasApi = httpElt.getAttribute(ATT_JAAS_API_PROVISION);
		if (!StringUtils.hasText(provideJaasApi)) {
			provideJaasApi = DEF_JAAS_API_PROVISION;
		}

		if ("true".equals(provideJaasApi)) {
			jaasApiFilter = new RootBeanDefinition(JaasApiIntegrationFilter.class);
		}
	}
Adds the jaas-api integration filter if required