code: public void setPreferredCompressionCS(String name) throws SshException {
  
  		if (name == null)
  			return;
  
  		if (compressionsCS.contains(name)) {
  			prefCompressionCS = name;
  		} else {
  			throw new SshException(name + " is not supported",
  					SshException.UNSUPPORTED_ALGORITHM);
  		}
  	}
docs: Set the preferred compression for the Client->Server stream.
  
  @param name
  @throws SshException