code: def write_xml_root(xml_root, output_loc=None, filename=None):
      
      if xml_root is None:
          raise Dump2PolarionException("No data to write.")
      filename_fin = _get_filename(output_loc=output_loc, filename=filename)
  
      et = etree.ElementTree(xml_root)
      et.write(filename_fin, xml_declaration=True, pretty_print=True, encoding="utf-8")
      logger.info("Data written to '%s'", filename_fin)
docs: Outputs the XML content (from XML element) into a file.
  
      If `output_loc` is supplied and it's a file (not directory), the output
      will be saved there and the `filename` is ignored.
  
      Args:
          xml_root: root element ot the XML document
          output_loc: file or directory for saving the file
          filename: file name that will be used if `output_loc` is directory
              If it is needed and is not supplied, it will be generated