return map.containsKey(o);
    }

    /**
     * Adds the specified element to this set if it is not already present.
     *
     * @param o
     *            element to be added to this set.
     * @return true if the set did not already contain the specified
     *         element.
     */
    @Override
    public boolean add(final E o) {
        return map.put(o, PRESENT) == null;

# - - - - - - - - - -/
errors.login.failure=Login failed.
errors.app.illegal.transition=Please retry because of illegal transition.
errors.app.db.already.deleted=others might be updated, so retry.
errors.app.db.already.updated=others might be updated, so retry.
errors.app.db.already.exists=already existing data, so retry.
errors.app.double.submit.request=Your request might have been processed before this request. Please check and retry it.

    /**
     * This returns true if the file's attributes contain any of the attributes
     * specified for this filter. The wildcard has no influence on this
     * method as the server should have performed that filtering already. The
     * attributes are asserted here only because server file systems may not
     * support filtering by all attributes (e.g. even though ATTR_DIRECTORY was

        "The filename, directory name, or volume label syntax is incorrect.", "The system cannot find the file specified.",
        "Cannot create a file when that file already exists.", "The handle is invalid.", "The specified path is invalid.",
        "The system cannot find the path specified.", "The specified path is invalid.",

        "The pipe has been ended.", "The filename, directory name, or volume label syntax is incorrect.", "The directory is not empty.",
        "Cannot create a file when that file already exists.", "All pipe instances are busy.", "The pipe is being closed.",
        "No process is on the other end of the pipe.", "More data is available.", "This user account has expired.",

     */
    @Override
    public byte[] initSecContext ( byte[] inputBuf, int offset, int len ) throws CIFSException {
        SpnegoToken resp;
        if ( this.completed ) {
            throw new CIFSException("Already complete");
        }
        else if ( len == 0 ) {
            resp = initialToken();
        }
        else {
            resp = negotitate(inputBuf, offset, len);
        }

            if ( ( flags & SmbConstants.O_CREAT ) == SmbConstants.O_CREAT ) {
                // create it if necessary
                if ( ( flags & SmbConstants.O_EXCL ) == SmbConstants.O_EXCL ) {
                    // fail if already exists
                    this.openFunction = OPEN_FN_CREATE | OPEN_FN_FAIL_IF_EXISTS;
                }
                else {
                    this.openFunction = OPEN_FN_CREATE | OPEN_FN_OPEN;
                }

                resp = new SmbComWriteResponse();
            }
            ready = false;
        }

        synchronized void write( byte[] b, int n, SmbFile dest, long off ) {
            this.b = b;
            this.n = n;
            this.dest = dest;
            this.off = off;
            ready = false;
            notify();
        }

        public void run() {

# - - - - - - - - - -/
errors.login.failure = 로그인에 실패했습니다.
errors.app.illegal.transition = 불법적인 전환으로 인해 다시 시도하십시오.
errors.app.db.already.deleted = 다른 처리에서 제거되어 있을 수 있습니다. 작업을 확인하십시오.
errors.app.db.already.updated = 다른 처리로 업데이트 되어 있을 수 있습니다. 작업을 확인하십시오.
errors.app.db.already.exists = 데이터가 이미 존재합니다. 작업을 확인하십시오.
errors.app.double.submit.request =이 요청하기 전에 처리되는 경우가 있습니다. 작업을 확인하십시오.

    }

/* This returns true if the file's attributes contain any of the attributes
 * specified for this filter. The wildcard has no influence on this
 * method as the server should have performed that filtering already. The
 * attributes are asserted here only because server file systems may not
 * support filtering by all attributes (e.g. even though ATTR_DIRECTORY was
 * specified the server may still return objects that are not directories).