code: def from_respecth(cls, filename_xml, file_author='', file_author_orcid=''):
          
          properties = ReSpecTh_to_ChemKED(filename_xml, file_author, file_author_orcid,
                                           validate=False)
          return cls(dict_input=properties)
docs: Construct a ChemKED instance directly from a ReSpecTh file.
  
          Arguments:
              filename_xml (`str`): Filename of the ReSpecTh-formatted XML file to be imported
              file_author (`str`, optional): File author to be added to the list generated from the
                  XML file
              file_author_orcid (`str`, optional): ORCID for the file author being added to the list
                  of file authors
  
          Returns:
              `ChemKED`: Instance of the `ChemKED` class containing the data in ``filename_xml``.
  
          Examples:
              >>> ck = ChemKED.from_respecth('respecth_file.xml')
              >>> ck = ChemKED.from_respecth('respecth_file.xml', file_author='Bryan W. Weber')
              >>> ck = ChemKED.from_respecth('respecth_file.xml', file_author='Bryan W. Weber',
                                             file_author_orcid='0000-0000-0000-0000')