def set_header_visibility(self, column=False, row=False):
if row:    self._widget.verticalHeader().show()<EOL>else:      self._widget.verticalHeader().hide()<EOL>if column: self._widget.horizontalHeader().show()<EOL>else:      self._widget.horizontalHeader().hide()<EOL>return self<EOL>
Sets whether we can see the column and row headers.