docs: def extract(self, zip_archive, font_files):
          """
          Extract files to install
          """
          # Get a temp directory
          tmp_container = tempfile.mkdtemp(prefix='icomoon-tmp')
          self._debug("* Temporary dir for extracted archive: {}", tmp_container)
  
          # Extract manifest to temp directory
          zip_archive.extract(settings.ICOMOON_MANIFEST_FILENAME, tmp_container)
          # Then the font files
          for item in font_files:
              zip_archive.extract(item, tmp_container)
  
          # Get manifest for icon map
          webfont_store = WebfontStore(settings.ICOMOON_MANIFEST_FILENAME)
          webfont_store.get(self.webfont_name, {
              'fontdir_path': tmp_container,
          })
          icons = webfont_store.get_manifests()[self.webfont_name]
          #print json.dumps(icons, indent=4)
  
          # Render CSS icon part
          css_content = self.render_css(self.css_templatepath, icons)
  
          return tmp_container, css_content