code: def dimensions_unit(self, dimensions_unit):
          
          allowed_values = ["inch", "cm", "foot", "meter"]  # noqa: E501
          if dimensions_unit is not None and dimensions_unit not in allowed_values:
              raise ValueError(
                  "Invalid value for `dimensions_unit` ({0}), must be one of {1}"  # noqa: E501
                  .format(dimensions_unit, allowed_values)
              )
  
          self._dimensions_unit = dimensions_unit
docs: Sets the dimensions_unit of this MeasurementSettings.
  
  
          :param dimensions_unit: The dimensions_unit of this MeasurementSettings.
          :type: str