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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def jsonstrappend(self, name, string, path=Path.rootPath()):
 """ Appends to the string JSON value under ``path`` at key ``name`` the provided ``string`` """

        return self.execute_command('JSON.STRAPPEND', name, str_path(path), self._encode(string))