def file_name(self, value):
        """The file_name property.
        
        Args:
            value (string). the property value.
        """
        if value == self._defaults['fileName'] and 'fileName' in self._values:
            del self._values['fileName']
        else:
            self._values['fileName'] = value
def file_name ( self , value ) : if value == self . _defaults [ 'fileName' ] and 'fileName' in self . _values : del self . _values [ 'fileName' ] else : self . _values [ 'fileName' ] = value
The file_name property.
        
        Args:
            value (string). the property value.