code: def set(self, value):
      
      if self.is_value_set:
        # While we want to *allow* re-setting previously set measurements, we'd
        # rather promote the use of multidimensional measurements instead of
        # discarding data, so we make this somewhat chatty.
        _LOG.warning(
            'Overriding previous measurement %s value of %s with %s, the old '
            'value will be lost.  Use a dimensioned measurement if you need to '
            'save multiple values.', self.name, self.stored_value, value)
      if value is None:
        _LOG.warning('Measurement %s is set to None', self.name)
      self.stored_value = value
      self._cached_value = data.convert_to_base_types(value)
      self.is_value_set = True
docs: Set the value for this measurement, with some sanity checks.