public static String getTicketGrantingTicketIdFrom(final MutableAttributeMap scopeMap) {
        return (String) scopeMap.get(PARAMETER_TICKET_GRANTING_TICKET_ID);
    }
Gets ticket granting ticket id from.

@param scopeMap the scope map
@return the ticket granting ticket id from
core/cas-server-core-web-api/src/main/java/org/apereo/cas/web/support/WebUtils.java