docs: def export(self, hashVal=None, hashPath=None, tags=None, galleries=None):
          """
          The export function needs to:
          - Move source image to asset folder
          - Rename to guid.ext
          - Save thumbnail, small, and image versions
          """
          hashVal = hashVal or self.hash
          hashPath = hashPath or self.parent / hashVal + self.ext
          
          source = hashPath.replace('\\', '/').replace(ROOT, '')
          galleries = galleries or []
          tags = tags or []
  
          imagefile = ROOT / source
  
          if imagefile.ext == '.psd':
              psd = psd_tools.PSDImage.load(imagefile)
              workImage = psd.as_PIL()
          else:
              workImage = pilImage.open(imagefile)
              self.source = source
  
          if imagefile.ext in ('.tif', '.tiff', '.psd'):
              png = imagefile.parent / '{}.png'.format(imagefile.namebase)
              workImage.save(png)
              workImage = pilImage.open(png)
              imagefile.move(imagefile.replace(self.hash, self.title))
              self.source = png.replace(ROOT, '')
  
          formats = [
              ('image', FROG_IMAGE_SIZE_CAP),
              ('small', FROG_IMAGE_SMALL_SIZE),
          ]
          for i, n in enumerate(formats):
              if workImage.size[0] > n[1] or workImage.size[1] > n[1]:
                  workImage.thumbnail((n[1], n[1]), pilImage.ANTIALIAS)
                  setattr(self, n[0], self.source.name.replace(hashVal, '_' * i + hashVal))
                  workImage.save(ROOT + getattr(self, n[0]).name)
              else:
                  setattr(self, n[0], self.source)
  
          self.generateThumbnail()
  
          for gal in galleries:
              g = Gallery.objects.get(pk=int(gal))
              g.images.add(self)
  
          self.tagArtist()
  
          for tagName in tags:
              tag = Tag.objects.get_or_create(name=tagName)[0]
              self.tags.add(tag)
  
          if not self.guid:
              self.guid = self.getGuid().guid
          self.save()