docs: def get_dimension_by_unit_measure_or_abbreviation(measure_or_unit_abbreviation,**kwargs):
      """
          Return the physical dimension a given unit abbreviation of a measure, or the measure itself, refers to.
          The search key is the abbreviation or the full measure
      """
  
      unit_abbreviation, factor = _parse_unit(measure_or_unit_abbreviation)
  
      units = db.DBSession.query(Unit).filter(Unit.abbreviation==unit_abbreviation).all()
  
      if len(units) == 0:
          raise HydraError('Unit %s not found.'%(unit_abbreviation))
      elif len(units) > 1:
          raise HydraError('Unit %s has multiple dimensions not found.'%(unit_abbreviation))
      else:
          dimension = db.DBSession.query(Dimension).filter(Dimension.id==units[0].dimension_id).one()
          return str(dimension.name)