code: public static base_response flush(nitro_service client, nssimpleacl resource) throws Exception {
  		nssimpleacl flushresource = new nssimpleacl();
  		flushresource.estsessions = resource.estsessions;
  		return flushresource.perform_operation(client,"flush");
  	}
docs: Use this API to flush nssimpleacl.