code: def dump2file(self, obj, filepath, override=False, **kwargs):
          
          # First we check if the file already exists. If yes and the override
          # keyword is False (default), we will raise an exception. Otherwise
          # the file will be overwritten.
          if override is False:
              if os.path.isfile(filepath):
                  raise _FileAlreadyExists(
                      "The file {0} already exists. Use a different filepath, "
                      "or set the 'override' kwarg to True.".format(filepath))
          if str(filepath[-3:]) not in self._save_funcs.keys():
              raise _FileTypeError(
                  "The {0} file extension is "
                  "not supported for dumping a MolecularSystem or a Molecule. "
                  "Please use XYZ or PDB.".format(str(filepath[-3:])))
          self._save_funcs[str(filepath[-3:])](obj, filepath, **kwargs)
docs: Dump a dictionary into a file. (Extensions: XYZ or PDB)
  
          Parameters
          ----------
          obj : :class:`dict`
              A dictionary containing molecular information.
  
          filepath : :class:`str`
             The filepath for the dumped file.
  
          override : :class:`bool`
             If True, any file in the filepath will be override. (default=False)