public static String getServiceTicketFromRequestScope(final RequestContext context) {
        return context.getRequestScope().getString(PARAMETER_SERVICE_TICKET_ID);
    }
Gets the service ticket from request scope.

@param context the context
@return the service ticket from request scope
core/cas-server-core-web-api/src/main/java/org/apereo/cas/web/support/WebUtils.java