protected boolean isCipherExecutorEnabled() {
        return this.cipherExecutor != null && this.cipherExecutor.isEnabled();
    }
Delete ticket-granting ticket's service tickets.

@param ticket the ticket
@return the count of tickets that were removed including child tickets and zero if the ticket was not deleted
core/cas-server-core-tickets-api/src/main/java/org/apereo/cas/ticket/registry/AbstractTicketRegistry.java