code: public void setSize(UnsignedInteger64 size) {
  		this.size = size;
  
  		// Set the flag
  		if (size != null) {
  			flags |= SSH_FILEXFER_ATTR_SIZE;
  		} else {
  			flags ^= SSH_FILEXFER_ATTR_SIZE;
  		}
  	}
docs: Set the size of the file.
  
  @param size