docs: def placeholderForPerson(cls, person):
          """
          Make an unstored, placeholder L{Mugshot} instance for the given
          person.
  
          @param person: A person without a L{Mugshot}.
          @type person: L{Person}
  
          @rtype: L{Mugshot}
          """
          imageDir = FilePath(__file__).parent().child(
              'static').child('images')
          return cls(
              type=u'image/png',
              body=imageDir.child('mugshot-placeholder.png'),
              smallerBody=imageDir.child(
                  'mugshot-placeholder-smaller.png'),
              person=person)