code: def set_values(self, values, separator='\n', indent=4*' '):
          
          self._updated = True
          self._multiline_value_joined = True
          self._values = values
          if separator == '\n':
              values.insert(0, '')
              separator = separator + indent
          self._value = separator.join(values)
docs: Sets the value to a given list of options, e.g. multi-line values
  
          Args:
              values (list): list of values
              separator (str): separator for values, default: line separator
              indent (str): indentation depth in case of line separator