Parse the storage path in the config.

        Returns:
            str

def _parse_path(self):
        """
        Parse the storage path in the config.

        Returns:
            str
        """
        if self.engine == ENGINE_DROPBOX:
            path = get_dropbox_folder_location()
        elif self.engine == ENGINE_GDRIVE:
            path = get_google_drive_folder_location()
        elif self.engine == ENGINE_COPY:
            path = get_copy_folder_location()
        elif self.engine == ENGINE_ICLOUD:
            path = get_icloud_folder_location()
        elif self.engine == ENGINE_BOX:
            path = get_box_folder_location()
        elif self.engine == ENGINE_FS:
            if self._parser.has_option('storage', 'path'):
                cfg_path = self._parser.get('storage', 'path')
                path = os.path.join(os.environ['HOME'], cfg_path)
            else:
                raise ConfigError("The required 'path' can't be found while"
                                  " the 'file_system' engine is used.")

        return str(path)