code: public long ticketKeyNew() {
          Lock readerLock = context.ctxLock.readLock();
          readerLock.lock();
          try {
              return SSLContext.sessionTicketKeyNew(context.ctx);
          } finally {
              readerLock.unlock();
          }
      }
docs: Returns the number of times a client did not present a ticket and we issued a new one