code: def createContactItem(self, person, notes):
          
          if notes:
              return Notes(
                  store=person.store, person=person, notes=notes)
docs: Create a new L{Notes} associated with the given person based on the
          given string.
  
          @type person: L{Person}
          @param person: The person with whom to associate the new L{Notes}.
  
          @type notes: C{unicode}
          @param notes: The value to use for the I{notes} attribute of the newly
          created L{Notes}.  If C{''}, no L{Notes} will be created.
  
          @rtype: L{Notes} or C{NoneType}