code: @Override
  	public CPMeasurementUnit fetchCPMeasurementUnitByUuidAndGroupId(
  		String uuid, long groupId) {
  		return cpMeasurementUnitPersistence.fetchByUUID_G(uuid, groupId);
  	}
docs: Returns the cp measurement unit matching the UUID and group.
  
  @param uuid the cp measurement unit's UUID
  @param groupId the primary key of the group
  @return the matching cp measurement unit, or <code>null</code> if a matching cp measurement unit could not be found