code: public SftpFile openFile(String absolutePath, int flags)
  			throws SftpStatusException, SshException {
  		return openFile(absolutePath, flags, new SftpFileAttributes(this,
  				SftpFileAttributes.SSH_FILEXFER_TYPE_UNKNOWN));
  	}
docs: Open a file.
  
  @param absolutePath
  @param flags
  @return SftpFile
  @throws SftpStatusException
  , SshException