docs: def can_import(self, file_uris, current_doc=None):
          """
          Check that the specified file looks like an image supported by PIL
          """
          if len(file_uris) <= 0:
              return False
          for file_uri in file_uris:
              file_uri = self.fs.safe(file_uri)
              if not self.check_file_type(file_uri):
                  return False
          return True