}
@Override
public void preProcessWebXmlElement(WebAppType webApp, MergeContext context) throws DeploymentException {
if (webApp.getSessionConfigArray().length == 1) {
SessionConfigType sessionConfig = webApp.getSessionConfigArray(0);
mergeSessionConfig(webApp, sessionConfig, context, ElementSource.WEB_XML);
context.setAttribute("session-config", sessionConfig);
} else if (webApp.getSessionConfigArray().length > 1) {
throw new DeploymentException(WebDeploymentMessageUtils.createMultipleConfigurationWebAppErrorMessage("session-config"));
}