code: def containsID(self, idVal):
          
          for i in self:
              if i.id == idVal:
                  return True
          return False
docs: Checks if the collected items contains the give _idVal_
  
          # Parameters
  
          _idVal_ : `str`
  
          > The queried id string
  
          # Returns
  
          `bool`
  
          > `True` if the item is in the collection