code: def change_dir(self, to, after_app_loading=False):
          
          self._set('chdir2' if after_app_loading else 'chdir', to)
  
          return self._section
docs: Chdir to specified directory before or after apps loading.
  
          :param str|unicode to: Target directory.
  
          :param bool after_app_loading:
                  *True* - after load
                  *False* - before load