docs: def fluoview_metadata(self):
          """Return consolidated FluoView metadata as dict."""
          if not self.is_fluoview:
              return None
          result = {}
          page = self.pages[0]
          result.update(page.tags['MM_Header'].value)
          # TODO: read stamps from all pages
          result['Stamp'] = page.tags['MM_Stamp'].value
          # skip parsing image description; not reliable
          # try:
          #     t = fluoview_description_metadata(page.image_description)
          #     if t is not None:
          #         result['ImageDescription'] = t
          # except Exception as exc:
          #     log.warning('FluoView metadata: '
          #                 'failed to parse image description (%s)', str(exc))
          return result